1.

intsin^3xdx

Answer»

SOLUTION :`intsin^3xdx=intsin^2x.sinxdx`
=`INT(1-cos^2x)sinxdx`
[PUT cox=t
Then sinxdx=-DT]
=`int(1-t^2).(-dt)=1/3t^3-t+C`
`1/3cos^3x-cosx+C`


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