22.19 problem 19

Internal problem ID [10668]

Book: Handbook of exact solutions for ordinary differential equations. By Polyanin and Zaitsev. Second edition
Section: Chapter 1, section 1.3. Abel Equations of the Second Kind. Form \(y y'-y=f(x)\). subsection 1.3.1-2. Solvable equations and their solutions
Problem number: 19.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_rational, [_Abel, `2nd type`, `class B`]]

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

Solution by Maple

Time used: 0.0 (sec). Leaf size: 170

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

\[ \frac {6 \left (\sqrt {3}\, \operatorname {arctanh}\left (\frac {\sqrt {\frac {x \left (A^{2}\right )^{\frac {1}{3}}}{A}}\, \left (-2 x +y \left (x \right )\right )}{\sqrt {\frac {\left (4 x^{3}-4 y \left (x \right ) x^{2}+y \left (x \right )^{2} x +2 A \right ) \left (A^{2}\right )^{\frac {1}{3}}}{y \left (x \right )^{2} A}}\, y \left (x \right )}\right ) A +\frac {c_{1}}{6}\right ) x \sqrt {\frac {x \left (A^{2}\right )^{\frac {1}{3}}}{A}}+2 \sqrt {3}\, y \left (x \right ) \left (-x^{3}-\frac {y \left (x \right ) x^{2}}{2}+\frac {y \left (x \right )^{2} x}{2}+A \right ) \sqrt {\frac {\left (4 x^{3}-4 y \left (x \right ) x^{2}+y \left (x \right )^{2} x +2 A \right ) \left (A^{2}\right )^{\frac {1}{3}}}{y \left (x \right )^{2} A}}}{\sqrt {\frac {x \left (A^{2}\right )^{\frac {1}{3}}}{A}}\, x} = 0 \]

Solution by Mathematica

Time used: 2.08 (sec). Leaf size: 233

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

\[ \text {Solve}\left [c_1=-\frac {i \sqrt {-\frac {2 A+4 x^3-4 x^2 y(x)+x y(x)^2}{A}} \left (-6 \sqrt {A} x^{3/2} \text {arcsinh}\left (\frac {\sqrt {x} (2 x-y(x))}{\sqrt {2} \sqrt {A}}\right )+x^2 (-y(x)) \sqrt {\frac {2 A+4 x^3-4 x^2 y(x)+x y(x)^2}{A}}+x y(x)^2 \sqrt {\frac {2 A+4 x^3-4 x^2 y(x)+x y(x)^2}{A}}+2 \left (A-x^3\right ) \sqrt {\frac {2 A+4 x^3-4 x^2 y(x)+x y(x)^2}{A}}\right )}{4 \sqrt {A} x^{3/2} \sqrt {\frac {2 A+4 x^3-4 x^2 y(x)+x y(x)^2}{A}}},y(x)\right ] \]