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Question Number 137027 by liberty last updated on 29/Mar/21
$$\mathrm{2x}\:\mathrm{dx}\:+\:\mathrm{x}^{−\mathrm{2}} \left(\mathrm{x}\:\mathrm{dy}−\mathrm{y}\:\mathrm{dx}\right)\:=\:\mathrm{0} \\ $$
Answered by bobhans last updated on 29/Mar/21
