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Homework Statement
[itex]yy' + x = \sqrt{x^2 + y^2}[/itex]
Homework Equations
y = vx
y' = v'x + v
The Attempt at a Solution
[itex]y' + \frac{x}{y} = \frac{\sqrt{x^2 + y^2}}{y}[/itex]
[itex](v'x+v) + v =\frac{ \sqrt{x^2 + (vx)^2}}{vx}[/itex]
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