19.30 problem 543

Internal problem ID [3795]

Book: Ordinary differential equations and their solutions. By George Moseley Murphy. 1960
Section: Various 19
Problem number: 543.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [[_homogeneous, `class A`], _rational, _Bernoulli]

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

Solution by Maple

Time used: 0.015 (sec). Leaf size: 23

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

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

Solution by Mathematica

Time used: 0.173 (sec). Leaf size: 38

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

\begin{align*} y(x)\to -\sqrt {x} \sqrt {x+c_1} \\ y(x)\to \sqrt {x} \sqrt {x+c_1} \\ \end{align*}