Thursday, 13 December 2018

Simplifying the infinite series $sum_{n = 1}^{infty} left(frac{1}{2}right)^{3n}$

Does anyone know of a way to simplify



$$

\sum_{n = 1}^{\infty} \left(\frac{1}{2}\right)^{3n}
$$



to a number?

-

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)

real analysis - How to find $lim_{hrightarrow 0}frac{sin(ha)}{h}$

How to find $\lim_{h\rightarrow 0}\frac{\sin(ha)}{h}$ without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...