22.7 problem 613

Internal problem ID [3863]

Book: Ordinary differential equations and their solutions. By George Moseley Murphy. 1960
Section: Various 22
Problem number: 613.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [[_1st_order, _with_linear_symmetries], _rational]

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

Solution by Maple

Time used: 0.031 (sec). Leaf size: 36

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

\[ x -\left (-\frac {y \left (x \right ) {\mathrm e}^{y \left (x \right )}}{y \left (x \right )+1}+c_{1} \right ) \left ({\mathrm e}^{-y \left (x \right )}+y \left (x \right ) {\mathrm e}^{-y \left (x \right )}\right ) = 0 \]

Solution by Mathematica

Time used: 0.143 (sec). Leaf size: 23

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

\[ \text {Solve}\left [x=-y(x)+c_1 e^{-y(x)} (y(x)+1),y(x)\right ] \]