Question

Find the derivative of the function. MEDAL WILL BE REWARDED!!!
f(x)=x(3x-9)^3

Answer 1

@hartnn

Answer 2

product rule and chain rule

Answer 3

okay heres what I got f' (x)=1(3x−9)^3 +81x^3 −486x^2 +729x

Answer 4

(3x-9)^3 + 9x (3x-9)^2

Answer 5

(3x-9)^2 (3x-9+9x)

Answer 6

oh okay, so is that my final answer?

Answer 7

simplify it...

Answer 8

3x + 9x = 12 x

Answer 9

is there an x on the 12? woops...maybe I added wrong....

Answer 10

(3x-9)^2 (3x-9+9x) = (3x-9)^2 (12x-9)

Answer 11

oh yes your right, sorry wrote it wrong! Thank you so much again!

Answer 12

welcome :)