Question Number 97139 by mhmd last updated on 06/Jun/20
$${prove}\:{that}\:{sinh}\mathrm{3}{x}=\mathrm{3}{sinhx}+\mathrm{4}{sinh}^{\mathrm{3}} {x}\:? \\ $$$${help}\:{me}\:{sir}\:? \\ $$
Commented by mhmd last updated on 06/Jun/20
$${are}\:{you}\:{can}\:{help}\:{me}\:? \\ $$