1.438 problem 439

Internal problem ID [8018]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, linear first order
Problem number: 439.
ODE order: 1.
ODE degree: 2.

CAS Maple gives this as type [_separable]

\[ \boxed {x^{2} {y^{\prime }}^{2}+3 y x y^{\prime }+3 y^{2}=0} \]

Solution by Maple

Time used: 0.047 (sec). Leaf size: 37

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

\begin{align*} y \left (x \right ) = 0 \\ y \left (x \right ) = \frac {c_{1} x^{-\frac {i \sqrt {3}}{2}}}{x^{\frac {3}{2}}} \\ y \left (x \right ) = \frac {c_{1} x^{\frac {i \sqrt {3}}{2}}}{x^{\frac {3}{2}}} \\ \end{align*}

Solution by Mathematica

Time used: 0.082 (sec). Leaf size: 54

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

\begin{align*} y(x)\to c_1 x^{-\frac {3}{2}-\frac {i \sqrt {3}}{2}} \\ y(x)\to c_1 x^{\frac {1}{2} i \left (\sqrt {3}+3 i\right )} \\ y(x)\to 0 \\ \end{align*}