7.10 problem 10

Internal problem ID [1070]

Book: Elementary differential equations with boundary value problems. William F. Trench. Brooks/Cole 2001
Section: Chapter 2, First order equations. Exact equations. Integrating factors. Section 2.6 Page 91
Problem number: 10.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_rational, [_1st_order, `_with_symmetry_[F(x)*G(y),0]`]]

\[ \boxed {y^{2}+\left (x y^{2}+6 y x +\frac {1}{y}\right ) y^{\prime }=0} \]

Solution by Maple

Time used: 0.015 (sec). Leaf size: 38

dsolve((y(x)^2)+(x*y(x)^2+3*x*y(x)+3*x*y(x)+1/y(x))*diff(y(x),x)=0,y(x), singsol=all)
 

\[ \frac {x y \left (x \right )^{6}+y \left (x \right )^{3}-3 y \left (x \right )^{2}-{\mathrm e}^{-y \left (x \right )} c_{1} +6 y \left (x \right )-6}{y \left (x \right )^{6}} = 0 \]

Solution by Mathematica

Time used: 0.2 (sec). Leaf size: 41

DSolve[(y[x]^2)+(x*y[x]^2+3*x*y[x]+3*x*y[x]+1/y[x])*y'[x]==0,y[x],x,IncludeSingularSolutions -> True]
 

\[ \text {Solve}\left [x=-\frac {y(x)^3-3 y(x)^2+6 y(x)-6}{y(x)^6}+\frac {c_1 e^{-y(x)}}{y(x)^6},y(x)\right ] \]