1.44 problem 44

Internal problem ID [8381]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, linear first order
Problem number: 44.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_Bernoulli]

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

Solution by Maple

Time used: 0.0 (sec). Leaf size: 53

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

\begin{align*} y \left (x \right ) = -\frac {2}{\sqrt {-4 a \,x^{2}+4 \,{\mathrm e}^{2 x^{2}} c_{1} -2 a}} y \left (x \right ) = \frac {2}{\sqrt {-4 a \,x^{2}+4 \,{\mathrm e}^{2 x^{2}} c_{1} -2 a}} \end{align*}

Solution by Mathematica

Time used: 7.17 (sec). Leaf size: 70

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

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