1.21 problem 35

Internal problem ID [12274]

Book: Ordinary Differential Equations by Charles E. Roberts, Jr. CRC Press. 2010
Section: Chapter 1. Introduction. Exercises page 14
Problem number: 35.
ODE order: 1.
ODE degree: 2.

CAS Maple gives this as type [_quadrature]

\[ \boxed {{y^{\prime }}^{2}-4 y=0} \]

Solution by Maple

Time used: 0.031 (sec). Leaf size: 19

dsolve(diff(y(x),x)^2-4*y(x)=0,y(x), singsol=all)
 

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

Solution by Mathematica

Time used: 0.078 (sec). Leaf size: 38

DSolve[(y'[x])^2-4*y[x]==0,y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to \frac {1}{4} (-2 x+c_1){}^2 y(x)\to \frac {1}{4} (2 x+c_1){}^2 y(x)\to 0 \end{align*}