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Clairaut's EquationIn mathematics, a Clairaut's equation is a differential equation of the form -
To solve such an equation, we differentiate with respect to x, yielding -
so -
Hence, either -
or -
In the former case, C = dy/dx for some constant C. Substituting this into the Clairaut's equation, we have the family of functions given by -
the so-called general solution of Clairaut's equation. The latter case, -
defines only one solution y(x), the so-called singular solution, whose graph is the envelope of the graphs of the general solutions. The singular solution is usually represented using parametric notation, as (x(p), y(p)), where p represents dy/dx.
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