I've tried with the chain rule and $u$-subtitution ($u=\sqrt{x}$) but I get nothing. Can you help me please? $$\int (sqrt{x})(\sin(x)) \ dx$$
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Is the new edit what you are asking? Or is it $\sin^2(x)$ – user5826 Apr 27 '15 at 03:53
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This leads to not an elementary function – Alexey Burdin Apr 27 '15 at 03:58
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Sorry I flagged wrongly. I misread it as $x^2 \sin^2 x$. And as Alexey Burdin suggested, this does not yield elementary function. Check out in wolframalpha. – MonkeyKing Apr 27 '15 at 04:03
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Is the new edit what I'm asking. It's difficult. – ART Apr 27 '15 at 23:35