27.16 problem 782

Internal problem ID [4022]

Book: Ordinary differential equations and their solutions. By George Moseley Murphy. 1960
Section: Various 27
Problem number: 782.
ODE order: 1.
ODE degree: 2.

CAS Maple gives this as type [[_1st_order, _with_linear_symmetries], _Clairaut]

\[ \boxed {{y^{\prime }}^{2}-x y^{\prime }+y=0} \]

Solution by Maple

Time used: 0.031 (sec). Leaf size: 21

dsolve(diff(y(x),x)^2-x*diff(y(x),x)+y(x) = 0,y(x), singsol=all)
 

\begin{align*} y \left (x \right ) = \frac {x^{2}}{4} y \left (x \right ) = -c_{1}^{2}+c_{1} x \end{align*}

Solution by Mathematica

Time used: 0.009 (sec). Leaf size: 25

DSolve[(y'[x])^2-x y'[x]+y[x]==0,y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to c_1 (x-c_1) y(x)\to \frac {x^2}{4} \end{align*}