### Home > CALC > Chapter 11 > Lesson 11.2.1 > Problem 11-49

11-49.

**Multiple Choice:**The interval of convergence of the power seriesis: Homework Help ✎ (−∞, ∞)

[−1,1]

[−1,1)

(−1,1]

(−1,1)

Use the Ratio Test.

If *x* = –1:

Does this resultant series converge or diverge?

Be sure to check the resultant series if *x* = 1.