Question Number 125314 by peter frank last updated on 10/Dec/20
$$\mathrm{make}\:\mathrm{x}\:\mathrm{the}\:\mathrm{subject} \\ $$$$\mathrm{y}=\mathrm{x}! \\ $$
Commented by john_santu last updated on 10/Dec/20
$${may}\:{be}\:{make}\:{x}\:{as}\:{predicat}\: \\ $$
Commented by MJS_new last updated on 10/Dec/20
$$\mathrm{I}\:\mathrm{don}'\mathrm{t}\:\mathrm{think}\:\mathrm{we}\:\mathrm{can}\:\mathrm{give}\:\mathrm{an}\:\mathrm{explicit}\:\mathrm{inverse} \\ $$$$\mathrm{of}\:{y}=\Gamma\left({x}\right)\:\mathrm{not}\:\mathrm{even}\:\mathrm{for}\:{x}\geqslant\mathrm{2} \\ $$