I would need help with this proof. It seems any way I try to prove I get stuck or mess up somewhere, I know it's easy but basically I suck at proving stuff. So a bit help would be appreciated.
$\displaystyle \sum_{ y=1}^{ \infty } {q}^{ y-1 }p=1 $
I would need help with this proof. It seems any way I try to prove I get stuck or mess up somewhere, I know it's easy but basically I suck at proving stuff. So a bit help would be appreciated.
$\displaystyle \sum_{ y=1}^{ \infty } {q}^{ y-1 }p=1 $