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Use integration by parts to solve the two questions below.

    \[\int x\sin{x}\,\mathrm{d}x\]

    \[\int \left(3x+5\right)\sin{x}\,\mathrm{d}x\]

Author: ascklee

Dr. Lee teaches at the Wee Kim Wee School of Communication and Information at the Nanyang Technological University in Singapore. He founded The Mathematics Digital Library in 2013.

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