Question

Let g(s)=(5s−4)8.
Then g′(s) is________
and g′′(s) is _______
I dont know why I cant get the right answer for this question....

Answer 1

g prime of (s) is 5(8) which = 40 and you cant take the derivative of 40

Answer 2

well, i believe the derivative of a constant is 0. so g''(5s-4)8=0

Answer 3

the first derivative is indeed 40. i hope this helps. :)

Answer 4

oh wait I made a typo! Sorry guys! that is supposed to be to the power of 8 not x 8

Answer 5

(5s-4)^8

Answer 6

so if y=x^8, what is y'=?

Answer 7

you have to use the chain rule for the problem

Answer 8

i made a mistake in mine

Answer 9

forgot your exponents

Answer 10

ooooo and that's because the brackets counts as one part and the power as another, is that correct? Thats why the chain rule applies?

Answer 11

yes

Answer 12

that is why i was gonna start you with x^8