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Mathematics 15 Online
OpenStudy (anonymous):

6x^2 sin x + 7x cos x f ' (x) = ?

OpenStudy (lalaly):

\[f'(x)=12xsinx+6x^2cosx+7cosx-7xsinx \]

OpenStudy (lalaly):

\[=6x^2cosx+7cosx+5xsinx\]

OpenStudy (anonymous):

wow, good job, I have no idea how you did that

OpenStudy (lalaly):

lol do u know the product rule?

OpenStudy (anonymous):

f '(x) * g(x) * g' (x) * f(x)

OpenStudy (anonymous):

product rule in action

OpenStudy (lalaly):

no its f '(x) * g(x) + g' (x) * f(x)

OpenStudy (anonymous):

oh yeah, got it

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