Question
In Exercises $23-36,$ use the formula for the sum of a geometric series to find the sum or state that the series diverges.$$\sum_{n=0}^{\infty} \frac{3(-2)^{n}-5^{n}}{8^{n}}$$
Step 1
The first series has a first term (a) of 3 and a common ratio (r) of -2/8 = -1/4. The second series has a first term (a) of 1 and a common ratio (r) of 5/8. Show more…
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