\[ \text {Global$\grave { }$a} \text {Global$\grave { }$x} \text {Global$\grave { }$y}'(\text {Global$\grave { }$x})+\text {Global$\grave { }$b} \text {Global$\grave { }$y}(\text {Global$\grave { }$x})+\text {Global$\grave { }$c} \text {Global$\grave { }$x}^2+\text {Global$\grave { }$y}'(\text {Global$\grave { }$x})^2=0 \] ✗ Mathematica : cpu = 3599.93 (sec), leaf count = 0 , timed out
$Aborted
✗ Maple : cpu = 0. (sec), leaf count = 0 , exception
time expired