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astraxan [27]
2 years ago
11

X∞n=0 (2 n + 1) x 2 n

Mathematics
1 answer:
Black_prince [1.1K]2 years ago
6 0

Answer:3

If x=0 or x=1 it is trivial, so 0<x<1. Define a=1−x2, then 0<a<1.

Step-by-step explanation:

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