Question Number 134843 by Raxreedoroid last updated on 07/Mar/21
$$\mathrm{what}\:\mathrm{is}\:{f}\left({x}\right)? \\ $$$$\mathrm{such}\:\mathrm{that}\:\frac{{f}\left({x}\right)}{{x}}+{f}\:'\left({x}\right)\mathrm{ln}\:{x}=\mathrm{0} \\ $$
Commented by PRITHWISH SEN 2 last updated on 07/Mar/21
$$\frac{\mathrm{C}}{\mathrm{lnx}}\:\:\left(\mathrm{C}=\:\mathrm{constant}\right) \\ $$