Yesterday in class a professor give us this problem:(adsbygoogle = window.adsbygoogle || []).push({});

X= integral of 3du

This is my first year in the university, and I don't know anything about integrals, I have tried to solve it, but I can not find the result... the correct result. It was like a "brain shock" for me, because the professor doesn't explain nothing, just give us that.

Also, I don't know english, and I don't know if somebody could help me.

Thank you anyway...

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# Homework Help: Problem with an integral

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