Question 14 [SHOW-WORK QUESTION] Use an appropriate trigonometric substitution to evaluate each integral. (a) So V4- 1' dx (b) S 2 (12 +7)3/2 dx (Show your work on your worksheet to receive credit.) Edit View Insert Format Tools Table 12pt V Paragraph ~ B I U A & T 4 7 4 87D Question 15 [SHOW-WORK QUESTION] Use partial fractions to evaluate the integral. 3x3 +21-4 de (Show your work on your worksheet to receive credit.)D Question 16 10 pts [SHOW-WORK QUESTION] Evaluate each improper integral and determine whether the integral converges or of verges. the sure to use the definitions of improper integrals to receive credit. (2) JV5 72+5 dx (b) S de (Show your work on your worksheet to receive credit.)