Question Number 185330 by liuxinnan last updated on 20/Jan/23
$${what}\:{is}\:{the}\:{difference}\:{between} \\ $$$${d}^{\mathrm{2}} {x}\:{and}\:\left({dx}\right)^{\mathrm{2}} \\ $$
Answered by aleks041103 last updated on 20/Jan/23
$${d}^{\mathrm{2}} {x}\:=\:{d}\left({dx}\right) \\ $$$$\left({dx}\right)^{\mathrm{2}} =\left({dx}\right)×\left({dx}\right) \\ $$