In Section 11.8, read from the beginning of the section to the end of 
Example 3.

In Section 11.9, read Examples 4 and 5 on page 799.

p. 788 # 3, 8, 12, 26 (just give the radius and open interval of convergence)

p. 794 # 3, 5, 25, 27

p. 803 # 8, 11