D'Alembert's equation
In mathematics, d'Alembert's equation, sometimes also known as Lagrange's equation,[1] is a first order nonlinear ordinary differential equation, named after the French mathematician Jean le Rond d'Alembert. The equation reads as[2]
where . After differentiating once, and rearranging we have
The above equation is linear. When , d'Alembert's equation is reduced to Clairaut's equation.
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