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Question
Solve: ydx – xdy = 0 dy
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Solution
ydx – xdy = 0
ydx = xdy
`1/x "d"x = 1/y "d"y`
Integrating on both sides
`int 1/x "d"x = int 1/y "d"y`
log x = log y + log c
log x = log cy
⇒ x = cy
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