20.25 problem 572

Internal problem ID [3822]

Book: Ordinary differential equations and their solutions. By George Moseley Murphy. 1960
Section: Various 20
Problem number: 572.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_separable]

\[ \boxed {x^{2} \left (1-y\right ) y^{\prime }+\left (x +1\right ) y^{2}=0} \]

Solution by Maple

Time used: 0.016 (sec). Leaf size: 34

dsolve(x^2*(1-y(x))*diff(y(x),x)+(1+x)*y(x)^2 = 0,y(x), singsol=all)
 

\[ y \left (x \right ) = {\mathrm e}^{\frac {x \ln \left (x \right )+\operatorname {LambertW}\left (-\frac {{\mathrm e}^{-c_{1} +\frac {1}{x}}}{x}\right ) x +c_{1} x -1}{x}} \]

Solution by Mathematica

Time used: 6.17 (sec). Leaf size: 30

DSolve[x^2(1-y[x])y'[x]+(1+x)y[x]^2==0,y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to -\frac {1}{W\left (-\frac {e^{\frac {1}{x}-c_1}}{x}\right )} y(x)\to 0 \end{align*}