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LogicalAppleBest ResponseYou've already chosen the best response.1
Have you attempted this one yet ?
 one year ago

LogicalAppleBest ResponseYou've already chosen the best response.1
\[f(x) = \sin ^{3}(x)\] Did I write this down correctly? If so, try substitution. For example, let u = sin(x) and then take the derivative of u^3
 one year ago

AlexalayneBest ResponseYou've already chosen the best response.0
I got f'(X) is 9x^2cosx^2
 one year ago

LogicalAppleBest ResponseYou've already chosen the best response.1
3u^2 du/dx, yes. Now what is du/dx if u = sin x?
 one year ago

LogicalAppleBest ResponseYou've already chosen the best response.1
In other words, what is u' if u = sin x
 one year ago

LogicalAppleBest ResponseYou've already chosen the best response.1
What is the derivative of sin(x) ?
 one year ago

LogicalAppleBest ResponseYou've already chosen the best response.1
Great, so du/dx = cos x So we have 3u^2 * cos x Substitute u = sin(x) back in and what do we end up with ?
 one year ago

LogicalAppleBest ResponseYou've already chosen the best response.1
dw:1357249368629:dw
 one year ago
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