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find integral sqrt(1+(cosx)^2)*sin2x*cos2x. solve the same
is this sin2x and cos2x is also inside the underoot please let me know
We know that cos^2x= (1+cos2x)/2So put cos2x=yAfter taking constants out, we ll have to integratey√(3+y)dyThis is particularly easy and you simply have to write it as (3+y)^(3/2)-3(3+y)^(1/2). Now substitute 3+y=z and you are done
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