no 24 & 26 beserta cara nya

24. f(x) = 4x-3/-x-1
misal
u = 4x - 3 maka u' = 4
v = -x - 1 maka v' = -1

f'(x) = u'v - uv'/(v^2)
= 4(-x - 1) - (4x-3)(-1)/(-x-1)^2
= -4x-4+ 4x - 3/(-x-1)^2
= -7/(-x-1)^2
jawaban yang C

26.
y = 2x^2 - 8x + 4
a= 2,b=-8,c= 4
titik balik minimum (-b/2a, D/-4a)
-b/2a = -(-8)/2(2) = 8/4 = 2

D = b^2 - 4ac = (-8)^2 - 4.2.4 = 64 - 32 = 32
D/-4a = 32/(-4)(2) = 32/-8 = -4

jadi titik baliknya (2,-4)

Semoga membantu ya....