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Question

Area bounded by the curve y=1 and y=sinx+cosx+|sinxcosx|2 in x[0,π] is aπbc, (where a,b,c are integers) then a+b+c is

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Solution

sinx+cosx+|sinxcosx|2={cosx, x(0,π4)sinx, x(π4,π)

So,required area=π40(1cosx)dx+ππ4(1sinx)dx
=π21a+b+c=4

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