Page 76 - Math Grade 12 (Basic)

PROEUS DARA

2. + bx+ c
+ qx+r

1:f1St!:1SRS~ D = R {-4, 3} '1

2
f'(x) = 0 &t:lQlS l 56x + l04 = 0 ffiS l'l' = 28 - ( 1 x !04) = 784- <0
0 • d
> o mmgLl'lti xED '1 ~9l'l'i3S
2
. 2x 9x + 4
1 lm = + 00
X-> -4 -·-4- +x-12
-9x+4
lim = lim = -00 '1
+
X -4 x-> -4 +x-12

2i 9x+4
lim = lim = -oo
+ +
-l>- 3 X-;,. 3 + x-12
2( 9 4)
2 X 2 x+2
= lim 2x - 9 x + 4 = lim x = 2
-•±oo +x-12 x->±cox2(1+~-

~t:lffiS lim
X
lfllti '1 lim
X-'> x-l>

• n5 ruH1 unu :

~ ~ ~ 2
8 rup:;ty hJ ~ ~ t1 b unu c sb~fij x'ox t'i y = 0 ru 2x -9x+4 = 0
9 7 9 7
ffiS ll = 81-32 = 49 1:f1 S ti hJ x' = - = - S b x" = + = 4 '1
"' 4 2