Question

0
The general Solution of (ydx-xdy)/y²
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Answer 1

Answer:

How is (ydx-xdy) /y^2 = d(x/y)?

Notice, using division rule for differentiation as follows

ddx(xy)=yddx(x)−xddx(y)y2

ddx(xy)=y−xdydxy2

ddx(xy)=1dxydx−xdyy2

d(xy)=ydx−xdyy2