1.66 problem 68

Internal problem ID [2702]

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: 68.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_linear]

Solve \begin {gather*} \boxed {\left (x +1\right ) y^{\prime }-y-x \left (x +1\right )^{2}=0} \end {gather*}

Solution by Maple

Time used: 0.001 (sec). Leaf size: 15

dsolve((1+x)*diff(y(x),x)-y(x)=x*(1+x)^2,y(x), singsol=all)
 

\[ y \relax (x ) = \left (\frac {x^{2}}{2}+c_{1}\right ) \left (x +1\right ) \]

Solution by Mathematica

Time used: 0.033 (sec). Leaf size: 20

DSolve[(1+x)*y'[x]-y[x]==x*(1+x)^2,y[x],x,IncludeSingularSolutions -> True]
 

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