Which expression represents the integral of excosxe^x \cos xexcosx?
12ex(sinx+cosx)+C\frac{1}{2} e^x (\sin x + \cos x) + C21ex(sinx+cosx)+C
exsinx+Ce^x \sin x + Cexsinx+C
excosx+Ce^x \cos x + Cexcosx+C
12ex(cosx−sinx)+C\frac{1}{2} e^x (\cos x - \sin x) + C21ex(cosx−sinx)+C