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Question

ex(x1)(xln x)x2dx is equal to


A

ex(xln xx)+c

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B

ex(xln x+1x)+c

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C

ex(xln xx2)+c

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D

ex(xln x1x)+c

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Solution

The correct option is D

ex(xln x1x)+c


ex(x1)(xln x)x2dx

=ex(1x1x2)(lnexx)dx

=lnexxd(exx)

=ln(exx)exxexx+c

=exx(xln x1)+c


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