30.34 problem 894

Internal problem ID [4130]

Book: Ordinary differential equations and their solutions. By George Moseley Murphy. 1960
Section: Various 30
Problem number: 894.
ODE order: 1.
ODE degree: 2.

CAS Maple gives this as type [_linear]

\[ \boxed {{y^{\prime }}^{2} x^{2}-\left (-y+x \right )^{2}=0} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 24

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

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

Solution by Mathematica

Time used: 0.075 (sec). Leaf size: 30

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

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