Determine If the Series Converges or Diverges; If the Series $$\sum _ { n = 0 } ^ { \infty } \frac { \cos n \pi } { 2 ^ { n } }$$

question 408

Multiple Choice

Determine if the series converges or diverges; if the series converges, find its sum.
- $$\sum _ { n = 0 } ^ { \infty } \frac { \cos n \pi } { 2 ^ { n } }$$

• A) Converges; \(\frac { 2 } { 3 }\)
• B) Converges; 1
• C) Converges; 2
• D) Diverges

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