1.

intdx/(e^x-1)

Answer»

SOLUTION :`I=intdx/(e^x-1)`
=`inte^-x/(1-e^-x)DX`
LET `1-e^-x=t`
`e^-xdx=dt`
`THEREFORE I=intdt/t`
=`Inabst+C`
=`Inabs(1-e^-x)+c`
=`Inabs((e^x-1)/e^x)+c`


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