Find the sums of these geometric series:

1
Find the sums of these geometric series
2
What is the sum of an infinite geometric series
with a common ratio of r?
3
For what values of x does the following geometric
series converge?
What does this mean for the power
series representation of ?
4
Find the interval of convergence for the power
series representation of
What is the radius of convergence?
5
Find the interval of convergence for the power
series representation of
What is the radius of convergence?
6
Find the interval of convergence for the power
series representation of
What is the radius of convergence?
7
Find the interval of convergence for the power
series representation of
What is the radius of convergence?