1.10 problem 10

Internal problem ID [2997]

Book: Differential equations, Shepley L. Ross, 1964
Section: 2.4, page 55
Problem number: 10.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [[_homogeneous, `class C`], _rational, [_Abel, `2nd type`, `class A`]]

\[ \boxed {3 y+\left (4 x +6 y+1\right ) y^{\prime }=-2 x -1} \] With initial conditions \begin {align*} [y \left (-2\right ) = 2] \end {align*}

Solution by Maple

Time used: 0.141 (sec). Leaf size: 20

dsolve([(2*x+3*y(x)+1)+(4*x+6*y(x)+1)*diff(y(x),x)=0,y(-2) = 2],y(x), singsol=all)
 

\[ y \left (x \right ) = \frac {1}{3}-\frac {2 x}{3}+\frac {\operatorname {LambertW}\left (\frac {2 \,{\mathrm e}^{\frac {4}{3}+\frac {x}{3}}}{3}\right )}{2} \]

Solution by Mathematica

Time used: 4.969 (sec). Leaf size: 30

DSolve[{(2*x+3*y[x]+1)+(4*x+6*y[x]+1)*y'[x]==0,y[-2]==2},y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to \frac {1}{6} \left (3 W\left (\frac {2}{3} e^{\frac {x+4}{3}}\right )-4 x+2\right ) \]