**1.** ** A. ** integration by parts** B. ** substitution** C. ** neither

**2.** ** A. ** substitution** B. ** neither** C. ** integration by parts

**3.** ** A. ** neither** B. ** integration by parts** C. ** substitution

**4.** ** A. ** integration by parts** B. ** neither** C. ** substitution

**5.** ** A. ** integration by parts** B. ** neither** C. ** substitution

*(Note that because this is multiple choice, you will not be
able to see which parts of the problem you got correct.)*