Internal problem ID [8714]
Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, linear first order
Problem number: 378.
ODE order: 1.
ODE degree: 2.
CAS Maple gives this as type [[_1st_order, _with_linear_symmetries], _Clairaut]
\[ \boxed {{y^{\prime }}^{2}+\left (x +a \right ) y^{\prime }-y=0} \]
✓ Solution by Maple
Time used: 0.031 (sec). Leaf size: 32
dsolve(diff(y(x),x)^2+(x+a)*diff(y(x),x)-y(x) = 0,y(x), singsol=all)
\begin{align*} y \left (x \right ) = -\frac {1}{4} x^{2}-\frac {1}{2} a x -\frac {1}{4} a^{2} y \left (x \right ) = c_{1} a +c_{1}^{2}+x c_{1} \end{align*}
✓ Solution by Mathematica
Time used: 0.007 (sec). Leaf size: 26
DSolve[-y[x] + (a + x)*y'[x] + y'[x]^2==0,y[x],x,IncludeSingularSolutions -> True]
\begin{align*} y(x)\to c_1 (a+x+c_1) y(x)\to -\frac {1}{4} (a+x)^2 \end{align*}