Differential Equation/Examples/First Order Second Degree Total

Example of Differential Equation

Total differential equation of the $1$st order and $2$nd degree:

$x^2 \rd x^2 + 2 x y \rd x \rd y + y^2 \rd y^2 - z^2 \rd z^2 = 0$

Sources

• 1926: E.L. Ince: Ordinary Differential Equations ... (previous) ... (next): Chapter $\text I$: Introductory: $\S 1.1$ Definitions