1.20 problem 20

Internal problem ID [3071]

Book: Advanced Mathematica, Book2, Perkin and Perkin, 1992
Section: Chapter 11.3, page 316
Problem number: 20.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_separable]

\[ \boxed {2 x y^{\prime }+y^{2}=1} \] With initial conditions \begin {align*} [y \left (1\right ) = 0] \end {align*}

Solution by Maple

Time used: 0.031 (sec). Leaf size: 13

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

\[ y \left (x \right ) = \frac {x -1}{x +1} \]

Solution by Mathematica

Time used: 0.514 (sec). Leaf size: 14

DSolve[{2*x*y'[x]==1-y[x]^2,y[1]==0},y[x],x,IncludeSingularSolutions -> True]
                                                                                    
                                                                                    
 

\[ y(x)\to \frac {x-1}{x+1} \]