Question Number 4841 by awan last updated on 17/Mar/16
$$ \\ $$$${what}\:{mean}\:{for}\:{symbol}\:\Pi? \\ $$
Commented by 123456 last updated on 17/Mar/16
$$\underset{{i}=\mathrm{1}} {\overset{{n}} {\prod}}{x}_{{i}} ={x}_{\mathrm{1}} {x}_{\mathrm{2}} \centerdot\centerdot\centerdot{x}_{{n}−\mathrm{1}} {x}_{{n}} \\ $$