lizzie-wood_60c145f90480b
lizzie-wood_60c145f90480b
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First expand: (e^x + cos x)^2 = (e^x)^2 + 2*(e^x)*(cos x) + (cos x)^2 = e^(2x) + 2e^x cos x + cos^2 x Note that cos(2x) = 2cos^2 x - 1 so that cos^2 x = (cos(2x) + 1) / 2 So (e^x + cos x)^2 = e^(2x) + cos(2x)/2 +1/2 + 2e^x cos x The integ…