I'm having problem with a problem =) can someone help.(adsbygoogle = window.adsbygoogle || []).push({});

finding derivative:

f(x) = 1/2x^2 + 3x^3

i know there is a shortcut way to derivative, but i did the long way and got

9x^2 - x

is that correct? if not, can you tell me the step to solve it? thanks

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# Find the derivative: f(x) = 1/2x^2 + 3x^3

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