Compute the following indefinite integrals. 2 1 . dx x + 3 ac 2 . dx (Hint: Write *=*+3-3 in the numerator, and re-express the fraction. x + 3 Or: Do "polynomial long division") x2 + 1 3 . dx x + 3 4 . (In(2) )2 dx (Hint: Do a u -substitution, but what do you set as u ?) AC 5 . sin (In(x) ) dx ac