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1 ;+ /): :+

2 0 0* : +.7;. -. `-6+ 6 ` `-3fi`+ `-3` ` ` `+ `+7 `+7 ` fl`-3 `+3 ` `+ ` a `-8b ` 5 a `+b `+c `-ab+6bc-ca `+3+, `+3 `-.. `-+ ` `+(-)+ `-3+ 7 ; A+(C+B) =A+(B+C) =(A+B)+C =(3 `-+)+(3-+ `) =(3 `-+)+( `-+3) =(3+) `+(--)+(+3) = `-6+ A-3(B-C)+5B =A-3B+3C+5B =A+(-3B+5B)+3C =A+B+3C =(A+B)+3C =(3 `-+)+3(3-+ `) =(3 `-+)+(3 `-6+) =(3+3) `+(--6)+(+) =6 ` *( `-6+ 6 ` ( `-3)(fi`+) = `(fi`+)-3(fi`+) = `+ `-3fi`-3 = `-3fi`+ `-3 (+-3)(+3+) =(+3+)+(+3+)-3(+3+) = ` ` = `+(3+)+(-6)+3 `+(-)-3 = ` `-8-3 `-3fi`+ `-3 ` `-8-3. A(BC)={(+)( `+)} =( `+ `+) = `+ `+ ` (AB)C={(+)}( `+) =( `+)( `+) = `+ `+ ` 7A(BC)=(AB)C A(B+C)={(+)+( `+)} =( `++) = `+ `+ AB+AC=(+)+( `+) = `++ `+ = `+ `+ 7A(B+C)=AB+AC 5. (+3) `= `+3 ` 3+3 (3) `+(3) = `+ `+7 `+7 `` {(-)(+)} `=( `-) ` 6. (+)( `-+ `) =(+){() `- + `} =() `+ ` =( `) `-3( `) ` +3 ` `- ` + 3 =fl`-3 `+3 `- `+ `+7 `+7 ` fl`-3 `+3 `- ;+ /):

3 =8 `+ ` (a-b){(a-b) `+6ab} =(a-b)(a `+ab+b `) =(a-b){a `+ab+(b) `} =a `-(b) ` =a `-8b ` 5 (a-3b-c) ` =(a) `+(-3b) `+(-c) `+ a (-3b) =+ (-3b) (-c)+ (-c) a =a `+b `+c `-ab+6bc-ca 8 `+ ` a `-8b ` 5 a `+b `+c `-ab+6bc-ca 7. a `+b `=(a+b) `-3ab(a+b) =7-ab7 ab= afl`+bfl`=(a `+b `) `-a `b ` = `- `=65 5 (a-b) `=(a+b) `-ab =3 `- = a-b= () a>b) 7 a `-b `=(a-b) `+3ab(a-b) = `+3 = a `+b `+c `=(a+b+c) `-(ab+bc+ca) =5-(ab+bc+ca) 7 ab+bc+ca=8. -<3- +< 3 `-+ -<3 `+3 -<3 `-+ -<3 `-- -<3 ` ; 8 5 -< `+3+ -< `+ `+-5 -< `- ` -< `-6 `+ -< `-6 `-3 `+3+0; ` f()* - :- 57 `+7+; 0 7 f()=(-)( `+7+)+ = `+7 `+- `--8+ = `+3 `- E ducational Broadcasting Sstem -< ` < `-3-- -< ` A+B=( `-+ `)+( `-3 `) =( `-8+ `)+( `-3 `) =(-3) `-8+(+) ` =- `-8+3 ` p=-q=-8r=37 pqr= --+* `+3 ` (+)(+3) `-(+3)( `+3-) =(+3){(+)(+3)-( `+3-)} =(+3){( `++3)-( `+3-)} -+ ** : + 3

4 : + =(+3)(+7) = `+0+ 7; 0 03 (-3) ` =() `-3 () ` 3+3 () 3 `-3 ` =8 `-36 `+5-7 `7; ab `+a `b=ab(b `+a `) 05 =ab(a `+b `) =ab{(a+b) `-3ab(a+b)} =7-=8 `+<+ `+< `+ `+`+3 `+< `+ `+`` `+< `+ `++3 `+< `+ `++ `+< `+ `++ +0; 0 0* =++3 (+)(-)= `- 5(+)= `+ `++= `+3+- ; 7.+; 3+=+ =0, = `-3+=(a-b) `+b(-)+c =(a-b) `+b+(-b+c) a-b=b=-3-b+c=7 a=-b=-3c=- 7 a+b+c= (-)a+(-)b-3+= (a+b-3)+(-a-b+)=0 a+b-3=0 -a-b+=0 - ; +5 a=b=- (-)(+)f()= ` `+a `+b =-(5 0=+a+b, a+b= =--(5 0=(-) ` `+a(-) `+b 0=-a+b, a-b= -+ *+.* a=b=- a=0b= ` ; +5 a=0b=- a=b=- a=0b=- ;+ /):

5 =--(5 (-) `+a+-8=0 a=5 (+)( `+b-8) = `+(b+) `+(b-8)-8 = `+5 `--8 b+=5b-8=-, b= 7 a+b= f(-)=-+a-b+=0 7 a-b=-3 E ducational Broadcasting Sstem f(-)=-8+a-b+=0 7 a-b= - ; +5 a=5b=8 7 ab=0 5. f()* (-)(-) : Q() 0* a+b 5 f()=(-)(-)q()+a+b f()* -: f()=a+b= f()* -: f()=a+b=5 - ; +5 a=b=-3 ; 0; f()* ` Q() 5 f()=( `--3)Q()+3- f()=(+)(-3)q()+3- f()* +3 0; f(-)7 a=f(-)=- f()* ; f(3)7 b=f(3)=8 7 a+b=-+8= 7. f()=07 +k+3=07 k=- 8. f()* `+3+: Q() 5 f()= `+a `+b+ f()=( `+3+)Q() f()=(+)(+)q(), f(); (+)(+)++7. `-+3= `+0 `-+37 3* ; `--0; ` *- 5 : 5+, = a+b-=0 *.+7 a=0b-=07 a=0b= (a-)+(b-5)=0 --=0 7 =- --+* a=-3b= * : + 5

6 : =*( =a a= =0-(5 6=b b= =-(5 -+6=-c c=- 7 a+b+c=+3-= 03 f()= `+a `+-3 5 f()* +:- 57 0; f(-)=a-8 f()* -:- 57 0; f{;!;}=;a;-;8&; f(-)=f{;!;}7 a-8=;a;-;8&; 03 0*. a(3a+b) ` ab(a+b)(a `-ab+b `) 5 (-)(+)( `++ `)( `-+ `). (a+b-c)(a `+b `+c `+ab+bc+ca) (a `+b `+c `) ` 3. (-)(+)(-)(+3) (-)(+)(-3)(+3) 5 (+)(++). (-)(-)(+)(-) ( `+3+)( `-3+) 5 (+-)(+-) (-)(+)(-)(+3) (3-)( `++) -+ *.+( ;#;a=;; 8 ;; 7 a=;; ª;; 0 f()= `- `+ `+a+b ; f()* (+)(-): Q() 5 f()=(+)(-)q() f(-)=0f()=07 f(-)=-a+b+3=0 f()=a+b+=0 - ; +5 a=-3b=-6 a=-3b=-6. 7a `+7a `b+a `b `+ab ` =a(7a `+7a `b+ab `+b `) =a(3a+b) ` a `b+ab `=ab(a `+b `) 5 fl`-fl` =ab(a+b)(a `-ab+b `) =( `- `)( `+ `) =(-)( `++ `)(+)( `-+ `) =(-)(+)( `++ `)( `-+ `) a(3a+b) ` ab(a+b)(a `-ab+b `) 5 (-)(+)( `++ `)( `-+ `) 05 f()* -;!;:- 57 ` f()={-;!;}( `++6)+ - f()={-;!;} ( `++3)+ f()=(-)( `++3)+ 7 f()* - :- 57 `++30 ;. (a+b) `-c ` ={(a+b)-c}{(a+b) `+(a+b)c+c `} =(a+b-c)(a `+ab+b `+ac+bc+c `) =(a+b-c)(a `+b `+c `+ab+bc+ca) a `+b `+c `+a `b `+b `c `+c `a ` =(a `) `+(b `) `+(c `) `+a `b `+b `c `+c `a ` =(a `+b `+c `) ` (a+b-c)(a `+b `+c `+ab+bc+ca) (a `+b `+c `) ` 6 ;+ /):

7 E ducational Broadcasting Sstem 3. `+=X05 ( `+) `-8 `-8+ =( `+) `-8( `+)+ =X `-8X+ =(X-)(X-6) =( `+-)( `+-6) =(-)(+)(-)(+3) `=X05 `-0 `+ =X `-0X+ =(X-)(X-) =( `-)( `-) =(-)(+)(-3)(+3) `+3+ `++ = `+3++ `+ = `+(3+)+ `+ = `+(3+)+(+) =(+)(++) (-)(+)(-)(+3). `-3=X05 ( `-3) `-( `-3)-8 =X `-X-8 =(X+)(X-) =( `-3+)( `-3-) =(-)(-)(+)(-) `- `+6=( `+8 `+6)- ` =( `+) `-(3) ` (-)(+)(-3)(+3) 5 (+)(++) =( `+3+)( `-3+) `+(-3)+( `-3+) = `+(-3)+(-)(-) =(+-)(+-) (-)(-)(+)(-) ( `+3+)( `-3+) 5 (+-)(+-) 5. f()= `- `++6 5 f(-)=07 f()=(+)q() Q();: 3*- * f()=(+)( `-5+6)7 `- `++6=(+)( `-5+6) =(+)(-)(-3) 7 a+b+c=+(-)+(-3)=- 6. f()= `+ `-7 `-+6 5 f()=+-7-+6=0 f(-)=--7++6=0 7 3* f()=(-)(+)( `+-6) =(-)(+)(-)(+3) f()=3 `+ `+5-5 f 7 3* ;3!; f()={-;3!;}(3 `+3+6) f()=(3-)( `++) (-)(+)(-)(+3) (3-)( `++) : + 7

8 : + --+* 0 0 (a-b-) ` 03 ( `+-)( `--) 0 05 (-)(+)( `++5) 0 `- `+7 `-7 ` = `-3 ` 3+3 (3) `-(3) ` =(-3) ` 7 a=b=-3n=3 7 a+b+n=+(-3)+3= -+ +* 05 f()= `+ `+ `--55 f()=++--5=0 f(-)=-++-5=0 7 3* f()=(-)(+)( `++5) (-)(+)( `++5) 0 (a-b) `+(b-a+) =(a-b) `+(b-a)+ =(a-b) `-(a-b)+ a-b=x05 (a-b) `-(a-b)+=x `-X+ (a-b) `-(a-b)+=(x-) ` (a-b) `-(a-b)+=(a-b-) ` (a-b-) ` 03 `- `+6 =( `-8 `+6)- ` =( `-) `-() ` =( `+-)( `--) ( `+-)( `--) `-- `+-3 = `--(-)(-3) ={-(-)}{+(-3)} =(-+)(+-3) a=-b=-37 a+b=- 8 ;+ /):

9 E ducational Broadcasting Sstem 0 A-(A-B)+{3A-(B-C)} =A-A+B+(3A-B+C) =A-A+3A+B-B+C =(A+B+C) 7 (A+B+C)=8 `-+ A+B+C= `-+, ( `-3+)+( `+ `++3)+C= `-+ 7 C=- `+ `-3 0 (+a) `+(+3) ` =( `+3a `+3a `+a `)+(8 `+36 `+5+7) = `+(3a+36) `+(3a `+5)+(a `+7) ` a+36=36 a=0 7; 3a `+5=5 03 (-)(+)( `+)( `+ `+) =( `-)( `+)( `+ `+) =( `-)( `+ `+) = ` `- 7 ` `-=«`- n= 75+* / a=0, b= -5 (a+b+3c)(a+b-c) 3 ( `+5+)( `+5+) 5 5 :0* 00 a `+b ` '3 7 = = a `+b ` 8 05 `+ ={+;[!;} `- ` 7 a=7 =3 `-=7 fl`+ ={ `+ } `-3 { `+ } fl` ` ` =7 `-3 7=3 7 b=3 7 a+b=7+3=3 06. A* -:- 57 `+7+; 0 k7 A=(-)( `+7+)+k = `+7 `+- `--8+k = `+3 `+k-8.,. A7. -7 k-8=-7 k=7 07 (a `+3)( `+b)=a `+ab `+3 `+3b 7 3'3 =a `+(ab+3) `+3b a `+(ab+3) `+3b= `-3 `+c * )5 a=ab+3=-33b=c ab+3=b+3=-3 b=-3 c=3b=3 (-3)=- 7 abc= (-3) (-)=5 3 0 a `+b `=(a+b) `-ab =('3) `- =8 a `+b `=(a+b) `-3ab(a+b) a `+b `=('3) `-3 '3='3 08 f()=(+)q()-3; Q()* - : Q'() 5 : +

10 : + Q()=(-)Q'()+37 f()=(+){(-)q'()+3}-3 =(+)(-)Q'()+3 f()* -:- 57 0; f()=6 0. f(); +-+37* 7 f()=(+3)(+)(-) 7 f(-)= (-)=- 5 3 (+)(+)(+3)(+)-5 ={(+)(+)}{(+)(+3)}-5 =( `+5+)( `+5+6)-5 `+5=X05 ( `+5+)( `+5+6)-5 =(X+)(X+6)-5 =X `+0X+ =(X+)(X+) =( `+5+)( `+5+) ( `+5+)( `+5+) f()= `+(-a) `-(a+)+a 5 f()=07 3* 0 `-+< + `-+< `+`+ a+b `-+< `- `+ `-+< `- `+(a-)+b `-+< `- ` `-+< ` a+(b-)=0 a=0b-=0 7 a=0b= a+(b-) a=0b= -a -a- a -a+ -a -a+ -a 0 f()=(-){ `+(-a)-a} =(-)(+)(-a) +7., a7 ;. -;!;;#; ; ; * a=b+=8c+6=d+=6 7 a=b=c=-5d= f()= `+ ` f()* -:- 57 0; f()=+-5-6= a a `+(b+c)a+b `+bc-3c ` =a `+(b+c)a+(b+3c)(b-c) =(a+b+3c)(a+b-c) -5 (a+b+3c)(a+b-c) 5 f()= `- `++k f()=0,-++k=0 7 k=-3 7 f()= `- `+-3 7* f()= `- `+-3 f()=07 f()=(-)q() Q();: 3*- * f()=(-)( `-+3) a=-b=37 a+b+k=(-)+3+(-3)=- 0 ;+ /):

11 : +-*7* ;* 0; +* ++ + (+)(+a)(-b) = `+(a-b+) `+(-ab+a-b)-ab ab=-6 ab= ab+(a-b)=5 a-b= 7 a `-b `=(a-b) `+3ab(a-b) 7 a `-b `= ` a `-b `=00 - (+)(+a)(-b)** 8 ab7- * 8 a-b7- * 8 a `-b `7- * % 0% 0% 0% 0 0* E ducational Broadcasting Sstem. +i=+i ==7 == +=0-=07 =-= == =-=. a+b=3a-b= a= 7 a= 5b= 7 a=b= /6.68. == =-=. a=b= 3. 3+i -i. +3i i -i 7. i i. =-'3+ 7; =-'3-7 -'3+i -'3-i = 7; = / 0. -;#;(+i) ( a=b= 3. (+i)(-i)=-i+i-i ` =+(-+)i- (-) =3+i +i (+i)i = = i i i i+ (-) = - =-i i+i ` i ` 3+i -i. z+z `=(+i)+(+i) ` =(+i)+(+i)(+i) =(+i)+(+i+i+i `) : +

12 : + =(+i)+{+i+(-)} =(+i)+i =+3i 5. z+zæ=(+i)+(-i)= zzæ=(+i)(-i)= `-i `= (z+)(zæ+)=zzæ+z+zæ+ =++=5 ;z!;+ = z+zæ zæ zzæ 6. z `={ } `= =;i!;= =-i z ` `=(z `)fi`=(-i)fi` 7)8 =-ifi`=-i ` i =-i ' +i = = +i+i+i ` i i i ` 7. ' -3' 7='3i' 7='3' 7i ="ç3 `i=i 'ƒ-7 ' 7i = ="ç3 `=3 ' -3 '3i (+i)(+i) +3i 5 -i -i i '3 " ('3) `- = = -'3+i -'3-i = 7; = ; / =-'3+ 7; =-'3-7 -'3+i -'3-i = 7; = / - " `- = =- i / a7 / 7 a=-+i, b=--i 7 +b= +(--i) a -+i --i 7 +b= +(--i) (-+i)(--i) --i 7 +b= +(--i) 7 +b=-;#;(+i) --+* -'3 i -;#;(+i) * ' 8. ' -' -+ ='i'i+ ' - 8. ' -' -+ i =i `+ i ` 8. ' -' -+ =--i '3 " ('3) `- (-) = =-'3 --i =-'3+ 7; =-'3-; 7 ' 'i 0 + = +i -i 0 + = = + i =+3i / =-+=6 - ; +5 =-=5 7 =-5 (-i)+(+i) (+i)(-i) (+)+(-+)i ;+ /):

13 E ducational Broadcasting Sstem i 0 = =-i i i ` 7 - = zǣ z z zæ zzæ = =- (+'i)-(-'i) i ` = +(') ` i = =i 'i i ` i ` 7 - = 3 = = i ` = =-i ifi` i *+ i i ` i ` i ` ` =={(-i)+(-)+i+}+{(-i)+(-)+i+} ==+{(-i)+(-)} ==--i =- " `- a=- 'ƒ-a 5/ a<0 =- 'ƒa-i *7 / 7 'ƒa-=7 a=8 03 z=a+bi 7ab;78 5 zæ=a-bi z=zæ 7 a+bi=a-bi 5b=07 z=a,7 z=-zæ5 a+bi=-a+bi 5a=07 z=bi 7 z `=(bi) `=b `i `=-b ` 0 5zzÆ=a `+b `=0 55a=0; b=07 z= z= = +' - 3(-'i) zz= (+'i)(-'i) zz= 3(-'i) 3 z z=-'i 7 zæ=+'i 3 +'i : + 3

14 05 : D 5 D = `- (k-)=-k+ D, 7- /5 >0+ 7 -k+>0 7 k< D - /5 =0+ 7 -k+=0 7 k= D 5, /- /5 <0+ 7 -k+<0 7 k> k< k= 5 k> D /5 =0+ 7 D 0* 687:. k< k= 5 k>. k=- 7; k= `-+=0 6. `-5+6=0 =k `- (k+3) =k `-k-3 +' =(k+)(k-3)=0 7 k=- 7; k=3 3. : 7 7 a+b=ab=3 (a+)(b+)=ab+(a+b)+ (a+)(b+)=3++ (a+)(b+)=6 a b + = a `+b ` b a ab -' 7. `{+ }{+ } (++'3i)(+-'3i) 8. -+i--i. -ia=-b= k=- 7; k=3 + = + = + : a `+b `=(a+b) `-3ab(a+b) 7 a `+b `= `-3 7 a `+b `= `- +=0 7 `-+=0 `-+=0 6. : 7 7 a+b=ab=3 5 (a+b)+ab=5 (a+b)ab=6 7 ; 68 `-5+6= `++=07 - " `- - ' = = 7 (a+b) `-ab ab `- 3 3 `-5+6=0 --' -+' `++=`{- }{- } +' -' `++=`{+ }{+ } 68 `++=07 =- " `- =- '3i 7 ;+ /):

15 E ducational Broadcasting Sstem `++={-(--'3i)}{-(-+'3i)} =(++'3i)(+-'3i) `-+=07 = " (-) `- = i 7 `-+={-(-i)}{-(+i)} =(-+i)(--i) 6 ; -+i--i +' -' `{+ }{+ } -+i--i. 687 * +i; ab77, * -i 5: 7 7 (+i)+(-i)=-a(+i)(-i)=b 7 a=-b=, + +i*+7 8 (5 (+i) `+a(+i)+b=0 i+(a+ai)+b=0,(a+b)+(+a)i=0 5a+b=0, +a=07 a=-b= 68 `-+=0- +5 = " (-) `- = i, -i (++'3i)(+-'3i) -ia=-b= --+* D æ0 D =(k-) `-(k `-5) =-k+6æ0 7 k 3 ; k; *- a(a+0) 5, * a 7 : 7 7 a+a=-6 a `=k 5 a=-7 - (5 k=8 03 : 7 7 a+b=-ab=;!; 7 {a+ }{b+ }=ab+ + + b ` a ` a b - {a+ }{b+ }=;!;+ + ;!; {;!;} ` a `b ` a+b {a+ }{b+ }=ab+ + ab (ab) `` 0. +cid+i7 +ci =-ci=d+i 7 c=-d= 7: 7 7 (-i)+(+i)=-a (-i)(+i)=b 7 a=-b=5 7 a+b+c+d=(-)+5+(-)+= {a+ }{b+ }=;!;+(-)+ {a+ }{b+ }=;!; 0 : 7 7 a+b=ab=3 7 a `+b `=(a+b) `-ab = `- 3 =- : + 5

16 : + a `b `=(ab) `=3 `= a `b `- ; `++=0 7 a+b=+= 05 6 `+a+b (-+i)(-a) `+a+b=0 *-i*+; 5ab77, * +i a=+i : 7 7 (-i)+(+i)=-a(-i)(+i)=b =-a5=b a=-b=57 a+a+b=(+i)+(-)+5=+i 06 0* 68:6(. -+'--'. 3. -'3+' k k. -)3 -)7 0. -) 7) ( = `+-7./. :7 7 ;,; 68 `+-= =- " `- (-)=- ' 7 ;,; -+'--' -+'--'. 68 a `+b+c=07 7 a b7 6( =a `+b+c7./. :7 7 ;,; ab., 6(7./ 6 = 7 a<b 5 -a=b- 7 a+b= a O =a +b+c b = 3. 6( = `+7./. 6 =3+77 ;,;8 `+= `--=0 7 = " (-) `- (-)= '3 7 ;,; -'3+'3 -'3+'3. 68 `+(a+)+b=0, `+a+b=-77 -,6( = `+a+b7. /. 6 =-; - A O = +a+b B =- 6 ;+ /):

17 E ducational Broadcasting Sstem 7 ;,; - 7 ;,7 5 (-)+= ( = `-k+k7./ : * /5 8 `-k+k=0- + *, D=(-k) `- k =k `-k =k(k-)=0 7 k=0 7; k= 0. = `-+3=(-) `- 0 35,. =05) 3-+; =5 --+; æ5,. = --+; ) 7 3 O - 3 O - =(-) - 3 =(-) ( = `+(k-)+k `-37./ : /5 68 `+(k-)+k `-3= * D 5 Dæ0+ * D =(k-) `- (k `-3) =-k+æ0 7 k k 7. 6( = `+k-7./. 6 =-k `+k-=-k, `+(k-)+k-= * D 5 D=0+ * D=(k-) `- (k-) =k `-6k+ =(k-3) `=0 7 k= ( = `+k7./. 6 =+k 5 68 `+k=+k, `-+k= * D 5 Dæ0+ * D =(-) `- k=-kæ0 7 k k 0. =- `++=-(-) `+ 0 35,. =35 -*+; =5) *+; 5,. =5) *+; 7 -)3 -)7 =-(-) + O 3 -) 7) - =-(-) + O 3 0 AB7 ;,* 00 ab(a<b) 5 ab; 68 `-+k=077 AB =' AB =b-a=' - 68 `-+k=0 : 7 7 a+b=ab=k --+* : + 7

18 : * - (5 (b-a) `= (a+b) `-ab= `-k= 7 k=;!; 0 68 `-+k=077 6( = `-+k7./. ; 7 ;, = `-+k =(-) `+k- 7.: : ; : 7 ;, * =(-) +k- 6( = `7./ `=+n, `--n=0 - + * D 5 D=0+ * D =(-) `- (-n)=+n=0 7 n= =-7 ; - 05 = `-+k=(-) `+k- 5 (7./; : k =(-) +k- k-3 O k ;* * : 7 = 5( 0 37 *, k- 0 7 k O = =7 ( 0 *, `- +k>0 7 k>3 3<k 7 k; =5 k-*+; =5) k*+; ): k+(k-)= 7 k= ( = `++7./. 6 =3+ ; 7 ;,; 68 `++=3+, `--=077 : 7 7 a+b=ab=- 7 a `+b `=(a+b) `-ab = `- (-) =8 0 -, =+n 5 8 ;+ /):

19 *. = 7; =- '3i = 7; = '3. = 7; = 3. = i 7; = =787; =- 7; =-. = 7; = = 7; =- '3 5. ==-3z=- 6. =3=-z= =-=0z=3 = 7. [ 7; = = 8. [ 7; [ = =3. [ 7; [ 7; [ 7; [ =3 - '3i =-5 0. [ 7; [ =5 7; [ 7; [ =-3 [ 7; [ =- ='5 ='5. ;0-5 (-)( `++)=0 7 = 7; =- '3i f()= `-3 `+5 f()=07 f(); -- +; 3* '7i =;%; =;!; = = =-3 =-3 = = f()=(-)( `--) +7 8 =5 =-5 '3i = = =-'5 =-' =- =- E ducational Broadcasting Sstem (-)( `--)=0 7 = 7; = '3. ;0-5 ( `+-)=8 = 7; =- '3i = 7; = '3 `+ `--8=0 f()= `+ `--85 f()=07 f(); -* +; 3* - -8 f()=(-)( `+3+) +7 8 (-)( `+3+)=0 7 = 7; = '7i 3. `=X5 X `-3X-=0 (X+)(X-)=0 ( `+)( `-)=0 ( `+)(+)(-)=0 7 = i 7; = f()= `+ `-3 `-+5 f()=0 f(-)=07 -+ f()7 3* f()=(-)(+)( `+-) +7 8 (-)(+)( `+-)=0 = 7; = -3 '7i : +

20 : + (-)(+)(-)(+)=0 (-) `(+)(+)=0 7 =787; =- 7; =- = i 7; = =787; =- 7; =- - (5 =-3 ==-3- (5 z=- ==-3z=-. `+ `+=0 ( `+ `+)- `=0 5. ( `+) `- `=0 ( `++)( `-+)=0 - '3i 7 = 7; = '3i f()= `+ `-3 `-+5 f()=0 f(-)=07 -+ f()7 3* f()=(-)(+)( `+-) +7 8 (-)(+)( `+-)=0 7 = 7; =- '3 - '3i = 7; = =- _ =7 +*_* 5 5=0 7 = ( ++z=- { -+z=3 -+3z= = 7; =- '3 * '3i z= +- 5 =6 7 =3 - (5 z= - (5 =- 7 =3=-z=, + ( += { +z= z+= (++z)=8 7 ++z= : z= : =3 : =- ( ++z= { ++z= ++z= =- _ =- _3+*- 5 =- 7 =- - (5 * =0 =-=0- (5 z=3 7 =-=0z=3, ;+ /):

21 (++z)=8 7 ++z= : =- : =0 : z=3 =3=-z= =-=0z=3 7. [ `-+ `= * +5 =-+3 - (5 `-+(-+3) `= `-7+5=0 (-)(-5)=0 7 = 7; =;%; ; ; = [ = 7; 8. [ = * +5 =-+3 - (5 (-+3)= `-3+=0 (-)(-)=0 7 = 7; = ; ; = [ 7; [ =, + +=3 +=3 = [ 7; +=3=7 ; t* 68 t `-3t+= (t-)(t-)=0 7 t= 7; t= =;%; [ =;!; = = = =;%; [ =;!; ; ; = [ 7; [. [ - 5 (-)(-)=0 7 = 7; = =* (5 `=36 `= E ducational Broadcasting Sstem 7 = 3 =35=3=-35=-3 =* (5 `=36 `= 7 = =5==-5=- = [ 7; ; ; =3 =-3 = [ 7; [ 7; [ 7; =3 =-3 = [ 7; [ 7; [ 7; `+3+ `=5 0. [ `++5 `=50 _-- 5 `+-3 `=0 (+3)(-)=0 7 =-3 7; = =-3* (5 `=5 7 = 5 =55=-5=-55=5 =5 5 `=5 7 = '5 = =3 ='55='5=-'55=-'5 ; ; =-5 =5 [ 7; [ 7; =5 =-'5 [ =-'5 7; `-3+ `=0 =3 = = `++ `=36 =-3 =-3 =-5 +=3 [ += = = = ='5 [ ='5 = [ = =- [ =- =- [ =- : +

22 : =- 7 =+ - (5 (+)+=3 `+-3=0 (+3)(-)=0 7 =-3 7; = =-35=-=5= ; ; =-3 [ =- 7; = [ = =-5 =5 [ 7; [ 7; 7; =5 =-'5 [ =-'5 =-3 [ 7; [ = =- =-5 = ='5 [ ='5 0 f()= `- `-6-5 f(-)=0f(3)=0 7 f(); ; 3* f()=(+)(-3)( `+3) (+)(-3)( `+3)=0 ; ; =-=3='3i=-'3i a+b (-)+3 7 = cd ('3i)(-'3i) 5 0 * 7 8 `-3 `-+a=0 =- (5-3-+a=0 7 a= `-3 `-+3=0 (-3)( `-)=0 (+)(-)(-3)= = --+* z -+z +3-z 03 = = = 3 7 -;8-5 ( ++z=3 { -+z= +3-z= = = -*- 5 * -=- 7 =3 - (5 = =3=- (5 z=- =3=z=-7 abc=3 (-)=-3 `-- `=0 0 [ - 5 `+3- `= (+)(-)=0 ;+ /):

23 7 =-= =-5 (5 `-3- `= 7 =-3 5=3 =5 (5 3 `+6= `+-3=0 (+3)(-)=0 7 =-3 7; = =-35=-6=5= ABC* ; 77 :57 8* 0 0 abc 5 ( a+b= { b+c=0 c+a= (a+b+c)=30 7 a+b+c= a= b= -- 5 c=6 77 :57 8; ` p+ ` p+6 ` p=77p * E ducational Broadcasting Sstem. a>b7 0 c*5 a+c>b+c c>d7 0 b*5 b+c>b+d a+c>b+c>b+d7 a+c>b+d < 7; > -3 7; æ 3. -;#; <- 7; > 5 = 7. a=-b= a 7. -5<a< 8. 3< =-3 7; >3-5<-3 7; -5>3 7 < 7; > æ7 + 3 <-5 + =-(+) - =-(-)7 -(+)-(-)æ7-+æ /(./. - <5 + =+ - =-(-)7 (+)-(-)æ70 +3æ7 7 æ5 + =+ - =-7 (+)+(-)æ7-æ7 7 æ 7-3 7; æ < 7; > -3 7; æ : + 3

24 : `-+3æ0 `+-3 0 (+3)(-) 0 7 -;#; `+-8>0 (+)(-)>0 7 <- 7; > 3 - O = = +-3 O 5. `7 ; - b 6+ (+)(-b) 0 7 `+(-b)-b 0 : + `+a-3 07 a=-b-3=-b 7 a=-b=3 7 a+b=(-)+3= 5 `-+ 0 (-) ` 07 = `-(a+)+æ0 /5 68 `-(a+)+=07 7- D 65D 0+ * = ;D;={-(a+)} `- 0 `+6+0<0 (+3) `+<07 ;; ;#; <- 7; > 5 = 7. `7 ; -<<6+ (+)(-)<0 7 `+-<0 ** a>05 6+ a `+b+>07 -<< 77 a<0+ * 7 0 a*5 ; 6+ a( `+-)>0,a `+a-a>0 ** : + a `+b+>0 7 a=b-a= 7 a=-b=- O = O a=-b=- a `+a-5 0 (a+5)(a-) a -5 a 7. - `+a+a-0< `-a-a+0>0 8 `-a-a+0=07 7- D `-a-a+0>0/5 ;D;=(-a) `-(-a+0)<0 a `+a-0<0, (a+5)(a-)<0 7-5<a< 8. 3 `-7-6>0 (3+)(-3)>0 7 7; >3 ` (-)(-) <a< ;+ /):

25 : 7 ; ; 3< + ` `-0 [ ` `-0 `--æ0 (+3)(-)æ ; æ `-0 +5 `--5 0 (+3)(-5) : 7 ; ; =-3 7; 5 3< =-3 7; æ5 6-3 = 3-6 = ;; ;; ;; ;; <5 6-3 = 3-6 =-(3-6)7 -(3-6) - 7 æ-;#; -;#; < 7 -;#; ;; ;; --+* 0 0 -<<5 03 -;3!;<< // E ducational Broadcasting Sstem 77 5 (-)+0+++3= f()<g()7 ; 6( =f()7. / 6 =g() ; ; ; -<<5 -<<5 03 `7 ; <<6+ (-)(-)<0 7 `-3+<0 +: + `+a+b<0 7 a=-3b= 6+ a `+b+>0-3 `++> `--<0(3+)(-)<0 7 -;3!;<< -;3!;<< 0 a /5 a<0 8 a `-6+a+8=077- D 5 ;D;=(-3) `-a(a+8) 0 a `+8a-æ0(a+)(a-)æ0 7 a - 7; aæ 7 7 5; a - a7) - 05 `+-8 0 (+)(-) : + 5

26 : + ;+7-3< 7 8 `+a+b=07 *7-3+ *,3 `-3a+b=0 7 b=-+3a `+a+b= `+a-3(3-a)<0 (+3)(-3+a)< a ;+7-3< 7.: 7 ; -3<<3-a+ * <3-a7 a< a7) 0 0 (3-3i)+(-+5i)=-+i ;0- +5 (3-)+(-3+5)i=-+i / =--3+5= ; +5 =-;!;=;3!; 75+* -+ /./ k :0* kæ5 7 a 0 + aæ = aǣ a- aæ=-i7 aæ+a=(-i)+(+i)= aæa=(-i)(+i)=5 a `+aæ `-(a+aæ) (aǣ )(a-) = (a+aæ) `-aaǣ (a+aæ) aæa-(aæ+a)+ a 7 + aæ `-_5- = aǣ a i (+i)(+i) +i+i ` i 03 = = = =i7 -i f(n)=i «` 7 f()+f()+f(3)+*+f(0) 7 =i+i `+i `+*+i ` ` 7 ={i+(-)+(-i)+}+{i+(-)+(-i)+} 7 =-+i (-i)(+i) -i ` +i+(-) 5 6 ;+ /):

27 '6+'ƒ-8 0 +'ƒ-3('+'ƒ-3) 'ƒ- '6+'8i 7= +'3i(+'3i) 'i ('6+'i)i 7= +'3i-3 'i i '6i-' 7= +'3i-3 -' 7=-'3i++'3i-3 7=-+'3i 7=a+bi a=-b='37 a `+b `=(-) `+('3) `= E ducational Broadcasting Sstem 6 =a+3; PQ7 ;, ab; 68 `+(+a)-=a+3, `+-=0777 : 7 7 a+b=-ab=- 7 a `+b `=(a+b) `-ab =(-) `-_(-) = ( f()=(-) `+a7./; : =(-) +a a+ 05 æ `+(+)-=0 `+-=0 (+)(-)=0 7 =- 7; = æ-7 =- 7; = < `-(+)-=0 `--6=0 (-3)(+)=0 7 =- 7; =3 < ; -7 ; (-)+=- 5 =05) +a =5 a 7 7)8+78=(+a)+a=8 7 a= 0 `-=(-)( `++)=07 `= `++= ` ` a+ a O 3 ` ` ` ={ + + }+ { + + } ` ` ` ` ` 06 f(a)=0; f(b)=07 68 `+k+k+=07 ab : 7 7 a+b=-kab=k+ 7 (a+)(b+)=ab+(a+b)+ (a+)(b+)=k++(-k)+ (a+)(b+)=3 07 6( = `+(+a)-7./. =++ { + + }+ `fl` ` ` `_ ` `± ` =( `++)+( `++) =++( `++)+ ` = = = 0 +=k =-+k.- `+ `=(5 `+(-+k) `= `+ `-k+k `-=0 : + 7

28 : + `-k+k `-= D D =(-k) `-(k `-)æ0 -k `+æ0k ` 7 - k - k a -a - a 7 -a+ a+ ( `+) `+(a+b)( `+)+ab=0 `+=t5 t `+(a+b)t+ab=0(t+a)(t+b)=0 7 ( `++a)( `++b)=0 `++a=0 8 `++a=07 7- D 5 D =-a<0 () a>) 7 8 `++a=0, / cd* +; : 7 7 c+d=-cd=a `++b=0 8 `++b=07 7- D 5 D =-b>0 7) b<8 7 8 `++b=0, 7 ab* +; : 7 7 a+b=-ab=b 7 a+b+cd = ab+c+d a>bc<07 ac<bc a>bc<07 ac<bc c>da>07 ac>ad 7 ad<bc 5a>b>07 ;aåb;>;aıb;,;b!;>;a!; a- b- +- ;; 7; (a+)-(-a+)+=a+ a+=7 a=5 5 `7 ; <<36+ (-)(-3)<0 7 `-5+6<0 +: + a `+b+c> a<0 + `-5+6<070 a*5 a( `-5+6)>0a `-5a+6a>0 + a `+b+c>0:7 b=-5ac=6a.- + a `+c-b>0(5 a `+c-b=a( `+6+5)>0 a<07 `+6+5<0(+)(+5)<0 7-5<<- ; 7 5 (-)+(-3)+(-)= `-k+k+=077- D D -a+ a+ =(-k) `-(k+)=k `-k- =(k+)(k-)æ0 7 k - 7; kæ 768 `+k+k+5=077- D 5 68 /- 7 8 ;+ /):

29 E ducational Broadcasting Sstem D =k `-(k+5) =k `-k-5 =(k+3)(k-5)<0 7-3<k< k 7-3<k - 7; k<5 k; : k : 7 kæ k * ; k7 7 5* * 8 7 5* k77 5* * 8 f()7- k77 5* * * * 8 kæ5 30% 30% 30% 0% +-*7* * - 5 7: 6(7./* 6 ;* 0; +* ++ + f()= `-k+3k+0=(-k) `-k `+3k+0 56( =f()7./;.: * =f() f() O k 68 `-k+3k+0=077- D D =(-k) `-(3k+0) =k `-3k-0 =(k+)(k-5)æ0 7 k - 7; kæ5 7 8 =k7 k> f()>0+ 7 f()= `-k +3k+0>0 7 k>- : +

30 0 : +. B7;,* 5 AB = - =37 -=3 7; -=-3 7 =5 7; =- B7;,; B(5) 7; B(-) B(5)B(-). AB =" {3-(- )} `+(a-) `=" a `-a+0; AB =57 " a `-a+0=5 0- *5 a `-a+0=5 a `-a-5=0 (a-5)(a+)=0 7 a=5 7; a=- 3. AB* 3 -; O(0)7 _+3_(-) =0, -3= =3. AB* 3; Q(3)7 3_-_(-3) 3- =3 3+6=33=-3 7 =-, + 0* 5;,. B(5), B(-) (7, ) 6. AQ BQ =37 AB BQ = k 3k k A(-3) B() Q(3) -+ (.+ 5, - 3, B; AQ* -; _3+_(-3) 7 = = AB* -; P7;,; _5+_(-) _+_5 = =3= = P(3, 3) AB* ; Q7;,; _5-_(-) _-_5 = == = Q(, -) PQ77 ;,; 3+ 3+(-) = =7= = 7 (7, ) - (7, ) 6.,0 ABC73(7 ;,; 7 (00)7 =07 a=- -++a 3 =07 b= 3+(-5)+b 3 7 a+b=(-)+= 0 P 57 7 P7 ;,* (a0) 5 PAB 7+ 7 AP =BP AP `=BP ` (a+) `+(0-) `=(a-) `+(0-3) ` a `+a+5=a `-8a+5 0a=0 --+* P(0) 0 AB =BC +0, C(07) ;+ /):

31 7 a= 7 P(0) P(0) E ducational Broadcasting Sstem C7;,; (07) ; C7 ;, 7 C7 ;,; A7 ;,, 5 * C(07) 0 AB =" (--) `+ (-3-3) `=3'5 BC =" {-(-)} `+ {0-(-3)} `=3'5 CA =" (-) `+(3-0) `=3',0 ABC; AB =BC +0,0 AB =BC +0, AC. BD; +7 AC. BD7 * -+ = 7 b=3 3+(-) = -+b a+3 7 a=- 7 b-a=3-(-)= A(-, 3) D(b, 3) B(-, a) C(, -) O ++a 05 =7 3 a+6=37 a=-3 =7 +3+b 3 b+=67 b= 7 a+b=- 0 AB =BC AB BC =,,. C; AB* 3 ; 7 C7;,* (ab) 5 3_-_(-) a= =0 3-3_3-_ b= =7 3-3 A(-, ) B(, 3) C(a, b) C7;,; (07), + C7;,* (ab) 5 AB BC = 7 B; AC* `:`-; a+(-) + 7 a=0b=7 b+ +, = =3 : + 3

32 0 : + 0*. (-3)-;-, ={-(-)} -3=+ =+5 7 a=b= a=b=5. =- 3. -,--;!;;-;#; -,-3; =+ 7; =- 0. '5 a=b=5. ; 7 (0)- ; (3)- ; = (-) 3-7 = =0 =-;!;-;#; -,-; -;!;; -;#; 3--= =- =3- -,-; 3; - -,--;!; ;-;#; -,-3; a+3=0 ==*(5 +a+3=0 7 a= =a `+=+a 7 -,- a `=7 a= a= 5; 6 = a a-=0a+(a+)+=07 a ;a!;= + a+ ;a!;= a `=a+ (a+)(a-)=0 7 a=- 7; a=., ;a!;+-7 a+- a= a a =a+=(a-)+67 a(a-)=- a `-a+=0 (a-) `=0 7 a= a+b+c=0a'+b'+c'=065 aa'+bb'=0 7 _3+3_a=03a=-6 7 a=-. -,- 67 8=+n, -+n=0 5 7: '7 0-0+n =' " `+(-) ` 7 n = - 3 ;+ /):

33 n= 7 =+ 7; =- =+ 7; =- 0. * 6 --=0-+= ; 6 --=0 57 *(0, -): 6 -+= ; 7+ d; d= _0-_(-)+ = 5 ='5 " `+(-) ` '5 '5 E ducational Broadcasting Sstem 03 6 a++3=06 -b+=0:67 a_+_(-b)=0 7 a-b=0 6 a++3=06 (b-)-+=0:7 a b- = a=b- 7 a+b= a=b= 7 a `+b `= `+ `=5 --+* =-3 05 '3-+7=0 7; '3--5=0 0 ('33)-; -,- ' ='3(-'3) -3='3-6 7 ='3-3 6 ='3-37 ; A(-3)B(6-)-; 67 -,-; (-) =-;!; ,-* m 5 m_{-;!;}=- 7 m= 7* AB7 M7;,; (-) M{ }, M() M()-; -, =(-) 7 =-3 =-3 0 ABC *6 5 /5 6 AB.6 AC7-,- 7 -(-) -a = 0 = -a -a (-a)=0(-a) a=-6 7 a=-3 8-(-) (-a)-a 05 6 '3--=0:* '3-+a=0 5 (0): a " ('3) `+(-) ` a- = =3 a- =6 7 a=7 7; a=-5 ; 67 8 '3-+7=0 7; '3--5=0 '3-+7=0 7; '3--5=0 : + 33

34 : + 0* 778. (+) `+(-) `=6 (+) `+(-3) `=. (-3) `+(+) `=5 3. a=-, r=. `+ `-+-5=0. 77 (-) (3) : :57 8 r; r=" {3-(-) } `+(-) `=' 6 ; 77 8 {-(-)} `+(-) `=(' 6) ` 7 (+) `+(-) `=6 (-3); :57 8; - = ; 77 8 {-(-)} `+(-3) `= ` 7 (+) `+(-3) `= (+) `+(-) `=6 (+) `+(-3) `=. A(-3)B() 57 7 AB {, }, (3-) ' <k< =+'5 7; =-' (.. 7*77 :57 8 r; (3-):A(-3) r=" (-3) `+ {(-3)- (-)} `='5 ; 77 8 (3-);:57 8 '5 7 (-3) `+(+) `=5 (-3) `+(+) `= `+ `+a-6-3=0(63)-7 =6= (5 6 `+3 `+a-8-3=0 7 a=- `+ `--6-3=0 (-) `+(-3) `= `7 77 :57 8 r; r= 7 a=-, r= a=-, r=. ; `+ `+A+B+C=0 5 7 (50)()(3-)* 7 * 5+5A+C=0 5+A+B+C=0 5+3A-B+C=0.- ; +5 A=-B=C=-5 ; 77 8 `+ `-+-5=0 `+ `-+-5=0 ; ; 7 *6 5 -, `+ `=5 =+k*(5 `+(+k) `=5,5 `+k+k `-5=077- D 5 D =(k) `-5(k `-5)=-k `+5>0 (k-5)(k+5)<0 7-5<k<5, + d; 77 (00): 6 -+k= k k d= = " `+(-) ` '5 ;:57 8; '5 7, /5 k '5 <'5 k <5 7-5<k<5-5<k<5 3 ;+ /):

35 E ducational Broadcasting Sstem 6. `+ `=r ` =-3+5*(5 `+(-3+5) `=r `,0 `-30+5-r `=077- D 5 D =(-5) `-0(5-r `)=0r `-5=0 7 r `=;%; :57 8 r;7 r= ; 77 (0 0):6 3+-5= d -5 5 d= = = " 3 `+ ` ' 0 ;:57 8; r7 * /5 d=r+ * 7 r= ' 0, (00): 6 +-a= :57 8 '5. * _0+_0-a " `+ ` ='5, -a =5 7 a=5 7; a=-5 57: 6 * =0 7 a=5, + ' a=07-,- m=-7 ; 07 8 =- '5_" (-) `+ =- 5 ' 0,+-5=0 7; ++5=0 57: 6 * =0 7 a=5 5 ' 0 8. ; 0 6 =-;!;+3: 67 ; 07 -,-* m 5 m_{-;!;}=-7 m= 7*77 :57 8 r= 7 ; 07 8 = _" `+= '5 =+'5 7; =-'5. 7 `+ `=0 57 (ab) a+b=07 =-;ba;+;; bº;; -;ba;=- 7 a=b, (bb)7 `+ `= (b) `+b `=0b `= 7 b= 7; b=- a=b7 a=b= 7; a=-b=- 7 ab= `+ `= 57 ('3) '3+= 7 `+ `= 57 (-'3) '3+= +- 5 =87 = --+* 0 0 (-) `+(-) `= '3 7; -'3 05 = 7; -3=5 0 `+ `-a-6+=0 ( `-a+a `)+( `-6+)-a `-+= / (-a) `+(-3) `=a `+5 7 (a3);:57 8 " a `+57 : + 35

36 : : * " a `+5=3 0- *5 a `+5=a `= a7 0 6 = 5 7 ; (-a) `+(-a) `=r ` 7 A(3)B(-)*7 (-a) `+(3-a) `=r ` (--a) `+(-a) `=r ` a+8=0 a= - (5 r `=3 ; 77 8 (-) `+(-) `=3 (-) `+(-) `=3 03 `+ `-+-=0 (-) `+(+) `= 7 (-);:57 8; 3 : 6 3++k=07 (-).677+:57837 * 3_+_(-)+k " 3 `+ ` k k k k 0 k7) 0 0 `+ `= =m+6-(5 `+(m+6) `=,(+m `) `+m+7=07 7- D D =(6m) `-7(+m `)=m `-7=0 7 m='3 7; m=-'3, + 77 (00):6 m-+6= m_0-(-)_0+6 " m `+(-) ` 6 " m `+ =3" m `+= =3 0- * +5 m `=3 7 m='3 7; m=-' ( ) = () = 7*0 ( ) `+ `= 57 7 `+ `= =- 7 (5 `+(- ) `= 5 `- =0 (5 -)=0 7 =0 7; =;5$; =05 = =;5$;5 =-;5#;7 00- ( = 7; -3=5 '3 7; -'3, + ; 07 -,-* m 5 -,- m; ()-; =m(-), =m-m+ 77 (00):6 =m-m+ 7 7+; 77 :57 8 :7 -m+ " m `+ 0- * +5 = m- =" m `+ 3m `-m=0 7 m=0 7; m=;3$; m= = m=;3$;507 8 =;3$;-;3%;, -3=5 ; 07 8 = 7; -3=5 = 7; -3=5 36 ;+ /):

37 0* *7 -+.( 3+a=0-+b=0 7 a=-3b= E ducational Broadcasting Sstem a=-3b=. (5, 3) (-3, ). (-, 0) =0. a=-3, b= 5. (-, ) =0 0. (-) `+(+) `=0. (3, )* (3+, -), (5, 3) (-5, )* (-5+, -), (-3, ) (5, 3) (-3, ). (5-3) m7 8- n * 7 ;,* () 5 5+m=-3+n= 7 m=-3n=7, *. (3) (-33+7), (-0) (-0) = = (5 (+)-3(-6)-= =0-3+5=0. `+ `-6+=0 (-3) `+(+) `= (3-) 77 (3-) a7 8- b * 7 ;, P7;,* (a b) (ab)* * 7 ;,; (a-b) * ; * 7 ;,; (-a-b) -a=-b=- 7 a=-b= P7;,; (-) (-) 6. A(3)* * P7;,; (3-); P(3-)* 7 * Q 7;,; (-3)7 PQ78; " {3-(-3)} ` +(--) `=" 6 `+ `=' 5 " {3-(-3)} ` +(--) `=' 3 7. * * *(5-5(-)-=0 +5-=0 * * *(5 (-)-5-=0 +5+=0 7 * * *(5 (-)-5(-)-=0-5+= = ` =(-) `+(-)- -= `-- 7 =- `++ =-(-) `+57 7 ;,; (5) ; 6 =-+k 5 7 5=-+k : + 37

38 7 k=6 : +, + 6 = `+-=(+) `-57 7 ;,; (--5) * * 67 7 ;,; (5) (5)6 =-+k 5 7 5=-+k 7 k= = * *7 8 (+)-(-)-5=0 7 --=0 *- 6 = * *7 8 --=0 7 -+=0 -+= (+3) `+(-) `=0-6 = * *7 8 (+3) `+(-) `=0 7 (-) `+(+3) `=0 * * *7 8 (--) `+(++3) `=0 7 (-) `+(+) `=0, + 7 (+3) `+(-) `= ;,; (-3); :57 8; ' 0 77 (-3)* 6 = * 7 ;,; (-3); * 7 ;,; (-) 7-7; :57 8; 0 7 ; 77 8 (-) `+(+) `=0 (-) `+(+) `=0 0 P(a)* * 7 ;,; (a+-3), (a+-) 6 = =(a+)-5a= 7 a= 0 ()* 7 8- m7 8- n * 7 ;,* (3-) 5 +m=3+n=- 7 m=n=- 6 = ` * =(-) `-(-)-3,= `-8+5 a=-8b=57 a+b=-3 --+* A(-)7 * - A' 5 A'(--);. AP =A'P 0- AP +BP =A'P +BP ;A'P +BP 6 7-5; A'PB6 5 + * 7 AP +BP =A'P +BP æa'b =" {3-(-)} `+ {-(-)} ` =5 A(-, ) O A'(-, -) P B(3, ) -+ * 5 38 ;+ /):

39 0 6 =3+k* 6 = * 6 78 =3+k, -3-k=0 77 (-):6-3-k= :5 78 ' 0:7 +(-3) (-)-k " `+(-3) ` k-5 =0 7 k=-5 7; k=5 k7 5 =' 0 E ducational Broadcasting Sstem - ; ; 7 P'''(0) a=0b=7 a `+b `= - P"(, ) =+ = P'(, ) P(, ) O 05 P()- 6 =+ * - Q(a b) 5 6 =+7 -,- 7 PQ* ; 6 7 -,-; -+ * b- a-, =- b-=-a+ 7 a+b= =+ Q P a+ b+ PQ* 7 { } 6 = b+ a+ = + b+=a++ 7 a-b=- a=0b=7 a `+b `=, + P(): 6 = P'()=(-)+, = 5 P'()-6 = 5 P''() : + 3

40 3 : + 0* +7* a '3-<a<' p )-6. æ `-;+ = `-7;8-6(7 +7 *.7,* 78 6(8 `-+>0 >- `+7 + =-(-) `+7 ;8-6( 7 +7 *.7,* O = - O = * (8 `+ ` (+3) `+(-) ` (+3) `+(-) `=67 -;8-6(7 +7 *.7,* 78 6(8. 7 `+(+) `=7-* -; + `+(+) `< 7 ==a* (5 *, `+(a+) `<(a+) `<3 -'3<a+<'3 7 -'3-<a<'3-5 O - +(-) = (+3) +(-) =6-3 O + 3 -'3-<a<'3-. + = `-+a7 7; 8- -; + æ `-+a; (, -)+ = `-+a7 7; æ `-+a ==--(5 * -æ `-_+a 7 a - a - 3. `+(-) `æ;7 `+(-) `=7;8-6(7 +7 *.7,* 5. + <-+; 6 =-+7 5 ; 8-6( + -+<0 >+7 6 =+7 ; 8-6( ; ;+7 *.7,* 78 *8 + æ `- + = `-7 ; 8 =-+ =+ - O 0 ;+ /):

41 6(+ `+ `<; 7 `+ `=7 -; 8-6( ; ;+7 *.7,* ( 8 * (-) `+ `æ 7 (-) `+ `=7 ; 8-6(+ `+ ` ; 7 `+ `=7 - ; 8-6(* ;+7 *.7,* ;*7 ; p-p=3p 78 6( ;+- `+ `-æ0 `+ `- 0 [ 7; [ `-+ 0 `-+æ0 3p ;+ 7 * 7 `+ `=7 8-6(*. + = `+7 8-6(* 7 7 ;;+ 7 * 7 `+ `=78-6( * -. + = `+7 8-6(* ;+7 *.7,* - O - - O - 3 = - O = (-) + = + = = + + = 78 6(8 E ducational Broadcasting Sstem +7 + ;+- `+ `->0 `+ `-<0 [ 7; [ `+ `->0 `+ `-<0 ;+ 7 * 7 `+ `=7 8-6(. 7 (-) `+ `=7 8-6( 7 7 ;;+ 7 * 7 `+ `= 7 8-6( -. 7 (-) `+ `=7 8-6( ;+7 *.7,* 78 * æ0+-æ ; ;; *- ;, ,* 58 * 6( 78 6(8 +=k (k;)5 =-;!;+;K; + = =- +k =-+ - O (-) + = - O - (, ) = + ;K;;67 ;7 ;K;6 5k*6 +7 * ()*0 5 k; 6-+; 6. + (-3) `+ `- 0 -; *. 7, : 7 (-3) `+ `=7-58 : +

42 : + * 6( 3-=k --+* -+ O (-3) + = [ 0 p ;#; a 6 05 `- `+ ` (8 3-=k`(k;) k=07(-3) `+ `=06 5 k7 7; (30): 6 3--k=0 7 7+; :57 8 3:7 3_3-_0-k " 3 `+(-) ` =3 -k =5-k= 5 7 k=-6 7; k= k7) -6 ) * 8 + = `-.7 `+ `=5; + = ` (8: 7 `+ `= ( ;+ : `- [ `+ ` = (8: 7 `+ `= (* *.7,* 6 =+6 A `- [ `+ ` 5-6 B O (8 6: 7 ; -.: AB 5 ; * 7 ; 7; OAB78-7,0 OAB78 =p_6 `_;!;-;!;_6_6 =p-8 p-8 03 `- `=(-)(+)æ07 ;+ -æ0 [ +æ0-7; - 0 [ + 0 ;+ /):

43 -æ0 E ducational Broadcasting Sstem ;+ [ 6 = * AB7* (8 +æ0 5 : 6 = (87 7 ;; æ0æ [ 6 =7 78 6(8: ;; *.7,* * 6( = (877 7*æ `-+ = `-778 6(8-777*.7,* = - = 600 = =- 3 k + (00, 00) =-+600 O O (8 0 *- ; ;8-6(*, * (8: 6 =;#; (877 7 *- -; ;+ ( { ;#;+3 (a-a)* 6(7+ 7 =a=-a* (5 ;+ * ( -a a+ { -a ;#; a+3-3a -a+6 7 a 6 -a 3a+3 7 aæ-;#; ; 7 a77 5; -;#; a 6 - =- 78 6(8 87 * =k 7k;85 6 =-;#;+;K; (0000)-0 5k * AB*7 7 - ;. 3_00+_00= ;#; a 6 : + 3

44 75+* ( `--)(-+) 0 :0* 0 A(-)B(35)C(a) AC =BC 7 AC `=BC ` (+) `+(a-) `=(-3) `+(a-5) ` +a `-a+=+a `-0a+5 6a=67a=;3*; : 3l+l=k7 l= k 5 7PB `:`BQ =l`:`k PB `:`7QB={ }:`k PB `:`7QB=`:`5 B; PQ*`:`5-;,m`:`n=`:`5 -+.* 7k>0l> =0-+=07-5 (0, )7(0).(-3)-; 67 -,-; : + =- P k 5 3k A 3l l B k Q c=0c+-6=07 -,- 00 ;!;-c;b.c7-; 0 7 A=0,6 -+c=0c+-6=06+ 7 ;!;_(-c)=-7c= (5 -+=0+-6=0.- ; +5 ==7 a=b= 7a+b+c=++=6 05 AC*; = (+) -(-) -=-;3$;(+) 3-3= =0 B 6 AC- 7 - H 5 AC =" (+) `+ (-3-) `=5 ;,0 ABC7 57 5=;!;_AC _BH =;!;_5_BH 7BH =6 BH ; B(a). 6 AC, = _+3_a+5 3+3a BH = = =6 " `+3 ` 5 3+3a =303+3a=30 7)a>08 7a=;; 3 ;; H C(-, ) 06 7 (+) `+(-) `=67 7 ;,; (-):57 8; O B(, a) A(, -3) ;+ /):

45 .: A.77 - ; 6 7: ; - 00 BC 65 PA78 5; PB 75-5;. 77 : A : : " (+) `+ (0-) `+=+' 07 7: (0).6 -+k= :578 '5.7 '5= k- =5k-= 5 7 k=7 7; k=-3 k;;7 k=7 08 `+ `-++=0 (-) `+(+) `=3 7.: 77 7 ;,; C(-):57 8 ; '3 77 (-) 6 ++k=0-7 - H 5 AB =5BH =7 CH =" ('3 ) `- `=' *;CH ;C(-).6 ++k= _+_(-)+k " `+ ` 7 k=3 7; k=- B B _0+(-)_+k " `+(-) ` H O A '3 (-, ) A -O C C(, -) =' k- = E ducational Broadcasting Sstem k77 5 (-)+3= 0 7 `+ `=5 57 (-3) =5 7 `+ `=5 57 (ab) a+b= ;#;_{-;ba;}=-`(b+0) 7 3a=b 7* (ab);7 `+ `= a `+b `=5 - ; +5 a= b= 3` 7/78 7 a + b =+3=7 0 (-)- (53) 7-; *.7 6 =+a *(5 -=(-3)+a=-+a.- = `+a+(5 -+a= `+a+ `+(a-)-a+3=0 6: 6(7./ * 68 `+(a-)-a+3=07 7- D 5 D=(a-) `-(-a+3)=0 a `-a++a-=0 a `-8=07a `=8 5 7 (-a) `+(-b) `=77 ;,; (ab):5 78; 3.: 6 = 7- * * : + 5

46 : + 7 ;, (ba):57 8; : : : " (a-b) `+ (b-a) `=3+3 " (a-b) `=6, (a-b) `=36 7(a-b) `=8 ;+ { k- 0 7 *.7, : ; 78 6(8 ;+7 *7 ;#;p;77 p7 ;6!;7 ;7 07 -; 60 6 =k=-k7: ; (;,; )-0 0 AB 5,0 OAB; *07 8 3,0 7 AB =3 AB; 7 A7 ;,; ;#;;.- `+ `=( +5 3'3 = A7;,; {;#; 6 =k7-,- 3'3-0 k= ='3 ;#;-0 ( `+ ` k+æ0 =-k 3 B -3 (b, a) O 3'3 =k } 7 OA*; = `-=;!;+; O (a, b) A = 3 + = , * : 78 6(866. * + = `-7; 6 =;!; (8 *- -; ;+ ( {,. * + = `-75; 6 =;!; (8 *- -; ;+ ( { æ `- ;!;+ `- æ;!;+, ; + ( `--)(-+) 0 ( `--)(-+) 0 87 : AB7* 00 5 æ0æ ;; *.7,* 58 6(* = O `-- 0 [ -+æ0 `--æ0 [ -+ 0 =-+75 =- (5, 5) 00 3 = - = + O k (86 87 :* ;+ /):

47 =k 7k;85 6 =-;%;+;0K0;(55)*0 5 k7 E ducational Broadcasting Sstem *: 87 :* 77 - ;. 500_5+00_5= : +-*7* + +7 *7 ): - 6 ;* 0; + * ++ + ( 3 ;+ { æ-+5 7*- ;, ,* : ;8 * 6( (, 3) =k (3, ) O =k (3, ) 78 6(8 5;[};=k 7k;85 * 7- ; -,- k6 =k 6 =k(3)-0 5 -,- k7) ;#; 6 =k(3)*0 5 -,- k7 );#; *- 8 )- * 8 - * 8 0% 30% 30% : + 7

48