List questions from geometric-progressions | MathQa

Coefficient to create a series whose sum is a given one

Published on 13 Jan 2025 - 2:04

Induction proof I'm having trouble with: $1+x+x^2+x^3+...+x^n = \frac{1-x^{n+1}}{1-x}$

Published on 13 Jan 2025 - 2:12

Geometrical progression from 1 to $\sqrt5$ to 3 by arithmetics

Published on 13 Jan 2025 - 2:10

Elementary product formula

Published on 13 Jan 2025 - 2:06

Sequence of sequences

Published on 13 Jan 2025 - 2:20

Sum of geometric progression of $(1+x)^{m+n}$

Published on 13 Jan 2025 - 2:20

How to prove this infinite product identity?

Published on 13 Jan 2025 - 2:14

Geometric progression with negative r value

Published on 13 Jan 2025 - 2:19

If $ \sum_{r=1}^{n} t_r $ = $ { n ( n + 1 ) ( n + 2 ) ( n + 3 ) } \over {8} $ , then what does $ \sum_{r=1}^{n} {1\over {t_r} } $ equal to?

Published on 12 Jan 2025 - 23:29

Use geometric progression formula to expand generating function into a power series?

Published on 13 Jan 2025 - 2:07