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Question

sinx+cosx1+sin2xdx=

A
x+c
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B
x+c
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C
sinxcosx+c
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D
|x|+c
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Solution

The correct option is C |x|+c
sinx+cosx1+sin2xdx

sinx+cosx1+2sinx.cosxdx

=sinx+cosxsin2x+cos2+2sinx.cosxdx

=sinx+cosx(sinx+cosx)2dx

=sinx+cosx|sinx+cosx|dx

=|1|dx

=|x|+c

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