Record your answers on the right of this cover page by marking the box correspond- ing to the correct answer: free response questions: Show all your work on the page of the prob- lem. Clearly indicate your answer and the reasoning used to arrive at that answer. Unsupported answers for the free response questions may not receive credit! Let a, b be real numbers and consider the integral z (ax2 + b) cos(x)dx. E. (ax2 + b) cos(x) 2az x cos(x)dx. (ax2 + b) cos(x) + 2az x sin(x)dx. (ax2 + b) sin(x) 2az x sin(x)dx. 2ax sin(x) 2z (ax2 + b) sin(x)dx. 2ax cos(x) + 2z (ax2 + b) sin(x)dx: evaluate the series. Record the correct answer to the following problems on the front page of this exam. Let a > 3 be a xed number. 1 (a 3)3 : which of the following is true for a series.