# D'Alembert's equation

In mathematics, **d'Alembert's equation** is a first order nonlinear ordinary differential equation, named after the French mathematician Jean le Rond d'Alembert. The equation reads as[1]

where . After differentiating once, and rearranging we have

The above equation is linear.

## References

- Davis, Harold Thayer. Introduction to nonlinear differential and integral equations. Courier Corporation, 1962.

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