1.239 problem 240

Internal problem ID [7819]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, linear first order
Problem number: 240.
ODE order: 1.
ODE degree: 1.

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

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

Solution by Maple

Time used: 0.015 (sec). Leaf size: 33

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

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

Solution by Mathematica

Time used: 0.41 (sec). Leaf size: 39

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

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