.(C).(B) Rewrite as and use formula (8).(E) Use formula (4) with u = ex − 1; du = ex dx.(D) Use partial fractions; find A and B such thatThen x − 1 = A(x − 2) + Bx.
Set x = 0: −1 = − 2 A and A = .Set x = 2: 1 = 2B and B = .So the given integral equals(A) Use formula (15) with .(B) Use formula (15) with u = sin θ; du = cos θ dθ.