Internal problem ID [6817]
Book: Elementary differential equations. By Earl D. Rainville, Phillip E. Bedient. Macmilliam
Publishing Co. NY. 6th edition. 1981.
Section: CHAPTER 16. Nonlinear equations. Section 99. Clairaut’s equation. EXERCISES Page
320
Problem number: 26.
ODE order: 1.
ODE degree: 2.
CAS Maple gives this as type [_rational, _dAlembert]
\[ \boxed {2 x {y^{\prime }}^{2}+\left (2 x -y\right ) y^{\prime }-y=-1} \]
✓ Solution by Maple
Time used: 0.062 (sec). Leaf size: 110
dsolve(2*x*diff(y(x),x)^2+(2*x-y(x))*diff(y(x),x)+1-y(x)=0,y(x), singsol=all)
\[ y \left (x \right ) = -2 \left (x \,{\mathrm e}^{\operatorname {RootOf}\left (-{\mathrm e}^{3 \textit {\_Z}} x +2 x \,{\mathrm e}^{2 \textit {\_Z}}+c_{1} {\mathrm e}^{\textit {\_Z}}+{\mathrm e}^{\textit {\_Z}} \textit {\_Z} -x \,{\mathrm e}^{\textit {\_Z}}+1\right )}-{\mathrm e}^{2 \operatorname {RootOf}\left (-{\mathrm e}^{3 \textit {\_Z}} x +2 x \,{\mathrm e}^{2 \textit {\_Z}}+c_{1} {\mathrm e}^{\textit {\_Z}}+{\mathrm e}^{\textit {\_Z}} \textit {\_Z} -x \,{\mathrm e}^{\textit {\_Z}}+1\right )} x -\frac {1}{2}\right ) {\mathrm e}^{-\operatorname {RootOf}\left (-{\mathrm e}^{3 \textit {\_Z}} x +2 x \,{\mathrm e}^{2 \textit {\_Z}}+c_{1} {\mathrm e}^{\textit {\_Z}}+{\mathrm e}^{\textit {\_Z}} \textit {\_Z} -x \,{\mathrm e}^{\textit {\_Z}}+1\right )} \]
✓ Solution by Mathematica
Time used: 1.438 (sec). Leaf size: 49
DSolve[2*x*(y'[x])^2+(2*x-y[x])*y'[x]+1-y[x]==0,y[x],x,IncludeSingularSolutions -> True]
\[ \text {Solve}\left [\left \{x=\frac {\frac {1}{K[1]+1}+\log (K[1]+1)}{K[1]^2}+\frac {c_1}{K[1]^2},y(x)=2 x K[1]+\frac {1}{K[1]+1}\right \},\{y(x),K[1]\}\right ] \]