Question

find the second derivative of the function:

f(x) = (x^3-2x)^4

Answer 1

my real problem is what the 4th power and expanding the brackets i know how to find th derivative

Answer 2

f'=4(x^3-2x)^3 * (3x^2-2)
expanding the brackets?

Answer 3

wouldn't do that. use product rule make you life easier

Answer 4

f''=4*3(x^3-2x)^2*(3x^2-2)*(3x^2-2)+4*(6x)(x^3-2x)

Answer 5

ooops that last parthesis i left out a third power

Answer 6

myininaya you are a calculating machine!

Answer 7

i wish
you are the best not me :(

Answer 8

i dont understand how u expanded that myininaya

Answer 9

what happened to expanding using pascals triangle>?