17.16 problem 16

Internal problem ID [13494]

Book: Ordinary Differential Equations. An introduction to the fundamentals. Kenneth B. Howell. second edition. CRC Press. FL, USA. 2020
Section: Chapter 25. Review exercises for part III. page 447
Problem number: 16.
ODE order: 2.
ODE degree: 1.

CAS Maple gives this as type [[_2nd_order, _missing_x], _Liouville, [_2nd_order, _reducible, _mu_xy]]

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

Solution by Maple

Time used: 0.0 (sec). Leaf size: 15

dsolve(diff(y(x),x$2)=diff(y(x),x)^2,y(x), singsol=all)
 

\[ y = -\ln \left (-c_{1} x -c_{2} \right ) \]

Solution by Mathematica

Time used: 0.217 (sec). Leaf size: 15

DSolve[y''[x]==y'[x]^2,y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to c_2-\log (x+c_1) \]