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dy/dx =y/x + tan(y/x)
let
u=y/x
du/dx = (x.dy/dx - y) /x^2
= (1/x) dy/dx - y/x^2
dy/dx = x.du/dx + u
---------
dy/dx =y/x + tan(y/x)
x.du/dx + u = u + tanu
x.du/dx = tanu
∫du/tanu = ∫dx/x
ln|sinu| = ln|x| + C'
sinu = Cx
sin(y/x)=Cx
ans : C
let
u=y/x
du/dx = (x.dy/dx - y) /x^2
= (1/x) dy/dx - y/x^2
dy/dx = x.du/dx + u
---------
dy/dx =y/x + tan(y/x)
x.du/dx + u = u + tanu
x.du/dx = tanu
∫du/tanu = ∫dx/x
ln|sinu| = ln|x| + C'
sinu = Cx
sin(y/x)=Cx
ans : C
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