2.160 problem 736

Internal problem ID [9071]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, Additional non-linear first order
Problem number: 736.
ODE order: 1.
ODE degree: 1.

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

\[ \boxed {y^{\prime }-\frac {2 x^{2}+2 x +x^{4}-2 y x^{2}-1+y^{2}}{x +1}=0} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 43

dsolve(diff(y(x),x) = (2*x^2+2*x+x^4-2*x^2*y(x)-1+y(x)^2)/(x+1),y(x), singsol=all)
 

\[ y \left (x \right ) = \frac {c_{1} \left (x^{4}+2 x^{3}-x^{2}-2 x -2\right )+x^{2}+1}{1+c_{1} \left (x^{2}+2 x \right )} \]

Solution by Mathematica

Time used: 0.333 (sec). Leaf size: 39

DSolve[y'[x] == (-1 + 2*x + 2*x^2 + x^4 - 2*x^2*y[x] + y[x]^2)/(1 + x),y[x],x,IncludeSingularSolutions -> True]
                                                                                    
                                                                                    
 

\begin{align*} y(x)\to x^2-\frac {2 (x+1)^2}{x^2+2 x-2 c_1}+1 \\ y(x)\to x^2+1 \\ \end{align*}