Sunday 14 February 2016

Geometric series: how to find $r$ and $n$ given the last term, the first term and the sum of terms

$S_n=76$, $a=36$, last term is $16$ given that this is a geometric series how to find $r$ and number of terms I have tried to solve simultaneously but failed
.

-

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}...