Page 228 - Math Grade 12 (Basic)

PROEUS DARA

1J. muu;~ x = -1 '~

2. n. x = 3 2. X= -5 ' X = I ~. X = -1 , X = 2 1J. t mrlL61~ x = 1 '1

4. n. A= 6

5. A= 0 , B = -4

6. n. f tf12SliJUi~ X = 3 sl~ f @smuu;~ X= 3 t9 '1

}-9 ""
., ttl X¢ 3
!:~run g ttlru g(x) = x
1 6 tU X = 3

?1. g( 1) = 3 '1

7. n. f(3) = 11 ' c = 3 ?1. f(2) = 4 ' c = 2 '1
1 ± J5
8. n. c=-- '1
2
9. fi. mh f(x) = cosx-xtanx

f(O) = 1 > 0

Jt) Jt Jt Jt Jt 2Ji- Jt 2.84- 3.14 0
f(4 = cos 4 - 4 tan 4 = 4 4 < 4 <
t~m2g fil'ij19idmH;hmrunru t~w2msm f(x) r.ihhtu-n1Jrunt1h.ns~wn ru
u Li S1 ..., S1 otct -
tsitH[H [ 0, ~] '1

2. f(x) = (xn-l)cosx+Jisinx 1 mutru (-oo, +oo)

J(0)=-2<0

j(l) = (ln-l)cosl+Jisinl 1 = Jisinl 1 >Jisin~-1 = 0