Posted by **Anonymous** on Tuesday, October 4, 2011 at 11:13pm.

Find ther derivative of the functions.

a. f(x)=(4x-x^2)^100

b. f(x)=(1+2x+x^3)^1/4

- calculus -
**Steve**, Wednesday, October 5, 2011 at 5:09am
apply the chain rule. If y = f(u), dy/dx = dy/du * du/dx

a. u = 4x-x^2, y = u^100

b. u = 1+2x+x^3, y = u^1/4

Got it?

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