200 Part IV: Integration and Infinite Series
*13. Integrate # x 9 + 16 x dx. 14. Integrate # dx .
2
x
2
2
_ 9 x + 4i 9 x + 4
Solve It Solve It
15. What’s # x dx ? Hint: This is a a - u 2 16. What’s # x 9 - 25 x dx? Same hint as in
2
2
25 - x 2
u problem 15.
problem where a = sini.
Solve It
Solve It