Question

Given that f(x)=x^8h(x):

h(−1)=5

h�Œ(−1)=8

Calculate f�Œ(−1)?

Answer 1

f'(x) = 8x^7 h(x) + x^8 h'(x)

f'(-1) = -8*5 + 1*8 = -32