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If I=int(sinx+sin^3x)/(cos2x)dx=Pcosx+Ql...

If `I=int(sinx+sin^3x)/(cos2x)dx=Pcosx+Qlog|f(x)|+R ,` then (a)`P=1/2,Q=-3/(4sqrt(2))` (b) `P=1/4, Q=1/(sqrt(2))` (c)`f(x)=(sqrt(2)cosx+1)/(sqrt(2)cosx-1)` (d) `f(x)=(sqrt(2)cosx-1)/(sqrt(2)cosx+1)`

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