Posted by **Alex** on Wednesday, May 21, 2008 at 7:37am.

Let y = u^3+6u, where u = 2x^4+3x^2-2

Find dy/dx.

Also..

2) Let f(x) = 1/sqrt(4x^2-x). Determine f'(x).

3) Let y = 5/cubrt((2x-5)^2). Determine dy/dx.

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