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Question Number 98535 by bobhans last updated on 14/Jun/20
$${f}\left({x}\right)\:=\:\mathrm{log}\:_{\mathrm{5}} \left({x}\right)\:+\:\mathrm{5}{e}^{\mathrm{3}{x}} \\ $$$${f}^{−\mathrm{1}} \left({x}\right)\:=\:? \\ $$