1.378 problem 379

Internal problem ID [8715]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, linear first order
Problem number: 379.
ODE order: 1.
ODE degree: 2.

CAS Maple gives this as type [[_1st_order, _with_linear_symmetries], _Clairaut]

\[ \boxed {{y^{\prime }}^{2}-\left (1+x \right ) y^{\prime }+y=0} \]

Solution by Maple

Time used: 0.062 (sec). Leaf size: 22

dsolve(diff(y(x),x)^2-(x+1)*diff(y(x),x)+y(x) = 0,y(x), singsol=all)
 

\begin{align*} y \left (x \right ) &= \frac {\left (x +1\right )^{2}}{4} \\ y \left (x \right ) &= c_{1} \left (x +1-c_{1} \right ) \\ \end{align*}

Solution by Mathematica

Time used: 0.006 (sec). Leaf size: 28

DSolve[y[x] - (1 + x)*y'[x] + y'[x]^2==0,y[x],x,IncludeSingularSolutions -> True]
                                                                                    
                                                                                    
 

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