How do you integrate #int (2x+3)sin(x^2+3x)# by integration by parts method?
The integrand is perfect for
I think using I.B.P would get really messy; especially if you're familiar with the L.I.A.T.E mnemonic . . .
You'd end up having to find the antiderivative of
Just by looking at the integrand, we should let: