23.5 problem 5

Internal problem ID [10730]

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. subsection 1.3.2. Equations of the form \(y y'=f(x) y+1\)
Problem number: 5.
ODE order: 1.
ODE degree: 1.

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

\[ \boxed {y y^{\prime }-\frac {3 y}{\sqrt {a \,x^{\frac {3}{2}}+8 x}}=1} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 293

dsolve(y(x)*diff(y(x),x)=3*(a*x^(3/2)+8*x)^(-1/2)*y(x)+1,y(x), singsol=all)
 

\[ \frac {{\left (-\frac {a \sqrt {x}\, \left (-2 a \,x^{\frac {3}{2}}+\sqrt {x}\, a y \left (x \right )^{2}-8 \sqrt {x \left (8+\sqrt {x}\, a \right )}\, y \left (x \right )-16 x \right )}{\left (\sqrt {x}\, a y \left (x \right )-4 \sqrt {x \left (8+\sqrt {x}\, a \right )}\right )^{2}}\right )}^{\frac {1}{4}} \sqrt {2 \sqrt {x}\, a +16}\, a \sqrt {x}\, y \left (x \right )+4 \sqrt {-\frac {\sqrt {2 \sqrt {x}\, a +16}\, \sqrt {x \left (8+\sqrt {x}\, a \right )}}{\sqrt {x}\, a y \left (x \right )-4 \sqrt {x \left (8+\sqrt {x}\, a \right )}}}\, \left (\sqrt {x}\, a y \left (x \right )-4 \sqrt {x \left (8+\sqrt {x}\, a \right )}\right ) \left (\int _{}^{-\frac {\sqrt {2 \sqrt {x}\, a +16}\, \sqrt {x \left (8+\sqrt {x}\, a \right )}}{\sqrt {x}\, a y \left (x \right )-4 \sqrt {x \left (8+\sqrt {x}\, a \right )}}}\frac {\left (\textit {\_a}^{2}-1\right )^{\frac {1}{4}}}{\sqrt {\textit {\_a}}}d \textit {\_a} +\frac {c_{1}}{4}\right )}{\sqrt {-\frac {\sqrt {2 \sqrt {x}\, a +16}\, \sqrt {x \left (8+\sqrt {x}\, a \right )}}{\sqrt {x}\, a y \left (x \right )-4 \sqrt {x \left (8+\sqrt {x}\, a \right )}}}\, \left (\sqrt {x}\, a y \left (x \right )-4 \sqrt {x \left (8+\sqrt {x}\, a \right )}\right )} = 0 \]

Solution by Mathematica

Time used: 0.0 (sec). Leaf size: 0

DSolve[y[x]*y'[x]==3*(a*x^(3/2)+8*x)^(-1/2)*y[x]+1,y[x],x,IncludeSingularSolutions -> True]
 

Not solved