y-x-dy-dx-y-x-d-2-y-dx-2-

Question Number 622 by 123456 last updated on 12/Feb/15

$$\frac{{y}}{{x}}\left(\frac{{dy}}{{dx}}−\frac{{y}}{{x}}\right)=\:\frac{{d}^{\mathrm{2}} {y}}{{dx}^{\mathrm{2}} } \\ $$

Commented by prakash jain last updated on 12/Feb/15

$${y}={kx}? \\ $$