1.

intxcos2xdx=.......+c

Answer»

`(xsin2x)/(2)+(COS2X)/(4)`
`xcos2x-(1)/(2)cos2x`
`(xsin2x)/(2)+(cos2x)/(2)`
`(X^(2)cos2x)/(2)+(sin2x)/(2)`

Answer :A


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