1.44 problem 45

Internal problem ID [2680]

Book: Differential equations for engineers by Wei-Chau XIE, Cambridge Press 2010
Section: Chapter 2. First-Order and Simple Higher-Order Differential Equations. Page 78
Problem number: 45.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [[_homogeneous, class D]]

Solve \begin {gather*} \boxed {y-2 x^{3} \tan \left (\frac {y}{x}\right )-y^{\prime } x=0} \end {gather*}

Solution by Maple

Time used: 0.005 (sec). Leaf size: 15

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

\[ y \relax (x ) = \arcsin \left ({\mathrm e}^{-x^{2}} c_{1}\right ) x \]

Solution by Mathematica

Time used: 5.919 (sec). Leaf size: 23

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

\begin{align*} y(x)\to x \text {ArcSin}\left (e^{-x^2+c_1}\right ) \\ y(x)\to 0 \\ \end{align*}