(adsbygoogle = window.adsbygoogle || []).push({}); urgent -- need derivative help!!

1. The problem statement, all variables and given/known data

f(x) = sin^3(x^2 + sinx)

f(x) = (cosx)^31^2

f(x) = sin(x^3/(cosx^3))

2. Relevant equations

3. The attempt at a solution

f(x) = sin^3(x^2 + sinx)

so i said it was 3sin(x^3+sinx) * (2x+cosx)

f(x) = (cosx)^31^2

i said this was the same as (cosx)^961, so 961(cosx)^960?

f(x) = sin(x^3/(cosx^3))

i said this was the same thing as sin(x^3cosx^-3), so cos(x^3cosx^-3) * (3x^2(cosx^-3) * (x^3(-3sinx^-4)?

please respond quickly, i have a fast deadline, gah thanks in advance

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# Homework Help: - need derivative help

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