2.57   ODE No. 57

\[ y'(x)-\sqrt {| y(x)| }=0 \] Mathematica : cpu = 0.0633034 (sec), leaf count = 26


\[\left \{\left \{y(x)\to \text {InverseFunction}\left [\int _1^{\text {$\#$1}}\frac {1}{\sqrt {| K[1]| }}dK[1]\& \right ][x+c_1]\right \}\right \}\] Maple : cpu = 0.09 (sec), leaf count = 31


\[x -\left (\left \{\begin {array}{cc}-2 \sqrt {-y \relax (x )} & y \relax (x )\le 0 \\ 2 \sqrt {y \relax (x )} & 0<y \relax (x ) \end {array}\right .\right )+c_{1} = 0\]