\[ \left \{t x'(t)+y(t)=0,x(t)+t y'(t)=0\right \} \] ✓ Mathematica : cpu = 0.0048264 (sec), leaf count = 31
\[\left \{\left \{x(t)\to c_1 t+\frac {c_2}{t},y(t)\to \frac {c_2}{t}-c_1 t\right \}\right \}\] ✓ Maple : cpu = 0.046 (sec), leaf count = 31
\[\left \{\left \{x \left (t \right ) = \frac {c_{2} t^{2}+c_{1}}{t}, y \left (t \right ) = \frac {-c_{2} t^{2}+c_{1}}{t}\right \}\right \}\]