(a) In each case, determine if the method of substitution is appropriate in order to evaluate the integral. / m2 d. 12 j 3dt -~Selecl-- :1 (1 + cos(t)) X4 5 2 (1 + 3x ) Use a substitution that does not require another substitution to evaluate the integral. Rewrite the integral in terms of u only. E: 1 (b) Fill in the information to show the set up that is needed to evaluate / dx using the method of substitution. 0