27.12 problem 778

Internal problem ID [3510]

Book: Ordinary differential equations and their solutions. By George Moseley Murphy. 1960
Section: Various 27
Problem number: 778.
ODE order: 1.
ODE degree: 2.

CAS Maple gives this as type [_quadrature]

Solve \begin {gather*} \boxed {\left (y^{\prime }\right )^{2}+a y^{\prime }+b x=0} \end {gather*}

Solution by Maple

Time used: 0.172 (sec). Leaf size: 49

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

\begin{align*} y \relax (x ) = -\frac {a x}{2}+\frac {\left (a^{2}-4 b x \right )^{\frac {3}{2}}}{12 b}+c_{1} \\ y \relax (x ) = -\frac {a x}{2}-\frac {\left (a^{2}-4 b x \right )^{\frac {3}{2}}}{12 b}+c_{1} \\ \end{align*}

Solution by Mathematica

Time used: 0.024 (sec). Leaf size: 68

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

\begin{align*} y(x)\to -\frac {\left (a^2-4 b x\right )^{3/2}+6 a b x}{12 b}+c_1 \\ y(x)\to \frac {1}{2} \left (\frac {\left (a^2-4 b x\right )^{3/2}}{6 b}-a x\right )+c_1 \\ \end{align*}