Solve your doubts and expand your knowledge with IDNLearn.com's extensive Q&A database. Get accurate and comprehensive answers to your questions from our community of knowledgeable professionals.

X∞n=0
(2
n + 1)
x
2
n


Sagot :

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: