- #1
pyrosilver
- 39
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urgent -- need derivative help!
f(x) = sin^3(x^2 + sinx)
f(x) = (cosx)^31^2
f(x) = sin(x^3/(cosx^3))
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
Homework Statement
f(x) = sin^3(x^2 + sinx)
f(x) = (cosx)^31^2
f(x) = sin(x^3/(cosx^3))
Homework Equations
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