35.28 problem 1062

Internal problem ID [4282]

Book: Ordinary differential equations and their solutions. By George Moseley Murphy. 1960
Section: Various 35
Problem number: 1062.
ODE order: 1.
ODE degree: 3.

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

\[ \boxed {2 x {y^{\prime }}^{3}-3 y {y^{\prime }}^{2}=x} \]

Solution by Maple

Time used: 0.078 (sec). Leaf size: 79

dsolve(2*x*diff(y(x),x)^3-3*y(x)*diff(y(x),x)^2-x = 0,y(x), singsol=all)
 

\begin{align*} y \left (x \right ) &= -\frac {\left (-1+i \sqrt {3}\right ) x}{2} \\ y \left (x \right ) &= \frac {\left (1+i \sqrt {3}\right ) x}{2} \\ y \left (x \right ) &= -x \\ y \left (x \right ) &= \frac {2 x \sqrt {c_{1} x}-c_{1}^{2}}{3 c_{1}} \\ y \left (x \right ) &= \frac {-c_{1}^{2}-2 x \sqrt {c_{1} x}}{3 c_{1}} \\ \end{align*}

Solution by Mathematica

Time used: 28.499 (sec). Leaf size: 4317

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

Too large to display