New posts in Geometric Series

How to integrate $\int_0^{\infty} \frac{x}{e^x+1} dx$

Triple summation verification $\sum_{1\le i\lt j\lt k}\frac{1}{2^i3^j5^k}$

Properties of three terms of a geometric series

Interpreting images representing geometric series

Two players alternate flipping a coin until the result is head. How to derive that the probability for the first player to win is $2/3$?

What is the maximum value of $\frac{x^{100}}{1+x+x^2+\ldots+x^{200}}$?

Is $1111111111111111111111111111111111111111111111111111111$ ($55$ $1$'s) a composite number?

Expression for sum of $n$ exponentials

How to find the sum of $1+(1+r)s+(1+r+r^2)s^2+\dots$?

Why can't the ratio test be used for geometric series?