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Question
`int sqrt(1 + sin2x) "d"x`
Solution
`int sqrt(1 + sin2x) "d"x = int sqrt(sin^2x + cos^2x + 2sinx cosx) "d"x`
= `int sqrt((cosx + sinx)^2) "d"x`
= `int (cosx + sinx) "d"x`
= sin x – cos x + c
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