Practice problem
What is the interval of convergence for this series?
(−1,1)(-1, 1)(−1,1)
(−∞,−1)∪(1,∞)(-\infty, -1) \cup (1, \infty)(−∞,−1)∪(1,∞)
(−∞,1)(-\infty, 1)(−∞,1)
(1,∞)(1, \infty)(1,∞)
(−∞,−1)(-\infty, -1)(−∞,−1)
(−∞,∞)(-\infty, \infty)(−∞,∞)
Type a concept, like “slope” or “photosynthesis”.