5.46 problem 45

Internal problem ID [1020]

Book: Elementary differential equations with boundary value problems. William F. Trench. Brooks/Cole 2001
Section: Chapter 2, First order equations. Transformation of Nonlinear Equations into Separable Equations. Section 2.4 Page 68
Problem number: 45.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [[_homogeneous, `class G`], _rational, _Bernoulli]

\[ \boxed {y^{\prime } x y-6 y^{2}=3 x^{6}} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 34

dsolve(x*y(x)*diff(y(x),x)=3*x^6+6*y(x)^2,y(x), singsol=all)
 

\begin{align*} y \left (x \right ) &= \sqrt {c_{1} x^{6}-1}\, x^{3} \\ y \left (x \right ) &= -\sqrt {c_{1} x^{6}-1}\, x^{3} \\ \end{align*}

Solution by Mathematica

Time used: 0.672 (sec). Leaf size: 42

DSolve[x*y[x]*y'[x]==3*x^6+6*y[x]^2,y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to -x^3 \sqrt {-1+c_1 x^6} \\ y(x)\to x^3 \sqrt {-1+c_1 x^6} \\ \end{align*}