1.104 problem 104

Internal problem ID [8441]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, linear first order
Problem number: 104.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_rational, [_1st_order, `_with_symmetry_[F(x),G(x)]`], _Riccati]

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

Solution by Maple

Time used: 0.016 (sec). Leaf size: 86

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

\[ y \left (x \right ) = \frac {-2 b a c_{1} x -i \sqrt {b}\, \sqrt {a}\, {\mathrm e}^{-2 i \sqrt {a}\, \sqrt {b}\, x} x -2 i c_{1} \sqrt {a}\, \sqrt {b}-{\mathrm e}^{-2 i \sqrt {a}\, \sqrt {b}\, x}}{x a \left (2 i c_{1} \sqrt {a}\, \sqrt {b}+{\mathrm e}^{-2 i \sqrt {a}\, \sqrt {b}\, x}\right )} \]

Solution by Mathematica

Time used: 2.922 (sec). Leaf size: 43

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

\[ y(x)\to -\frac {1}{a x}-\sqrt {\frac {b}{a}} \tan \left (a x \sqrt {\frac {b}{a}}-c_1\right ) \]