31.8 problem 907

Internal problem ID [3635]

Book: Ordinary differential equations and their solutions. By George Moseley Murphy. 1960
Section: Various 31
Problem number: 907.
ODE order: 1.
ODE degree: 2.

CAS Maple gives this as type [_separable]

Solve \begin {gather*} \boxed {x^{2} \left (y^{\prime }\right )^{2}+4 y y^{\prime } x -5 y^{2}=0} \end {gather*}

Solution by Maple

Time used: 0.0 (sec). Leaf size: 15

dsolve(x^2*diff(y(x),x)^2+4*x*diff(y(x),x)*y(x)-5*y(x)^2 = 0,y(x), singsol=all)
 

\begin{align*} y \relax (x ) = c_{1} x \\ y \relax (x ) = \frac {c_{1}}{x^{5}} \\ \end{align*}

Solution by Mathematica

Time used: 0.042 (sec). Leaf size: 24

DSolve[x^2 (y'[x])^2+4 x y[x] y'[x]-5 y[x]^2==0,y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to \frac {c_1}{x^5} \\ y(x)\to c_1 x \\ y(x)\to 0 \\ \end{align*}