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LogicalApple
 2 years ago
Best ResponseYou've already chosen the best response.1Have you attempted this one yet ?

LogicalApple
 2 years ago
Best 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

Alexalayne
 2 years ago
Best ResponseYou've already chosen the best response.0I got f'(X) is 9x^2cosx^2

LogicalApple
 2 years ago
Best ResponseYou've already chosen the best response.13u^2 du/dx, yes. Now what is du/dx if u = sin x?

LogicalApple
 2 years ago
Best ResponseYou've already chosen the best response.1In other words, what is u' if u = sin x

LogicalApple
 2 years ago
Best ResponseYou've already chosen the best response.1What is the derivative of sin(x) ?

LogicalApple
 2 years ago
Best ResponseYou've already chosen the best response.1Great, 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 ?

LogicalApple
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1357249368629:dw
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