\[ y(x) y'(x)^2-e^{2 x}=0 \] ✓ Mathematica : cpu = 0.0370401 (sec), leaf count = 47
\[\left \{\left \{y(x)\to \left (\frac {3}{2}\right )^{2/3} \left (c_1-e^x\right ){}^{2/3}\right \},\left \{y(x)\to \left (\frac {3}{2}\right )^{2/3} \left (c_1+e^x\right ){}^{2/3}\right \}\right \}\] ✓ Maple : cpu = 0.761 (sec), leaf count = 50
\[ \left \{ -{1\sqrt { \left ( {{\rm e}^{x}} \right ) ^{2}y \left ( x \right ) }{\frac {1}{\sqrt {y \left ( x \right ) }}}}+{\frac {2}{3} \left ( y \left ( x \right ) \right ) ^{{\frac {3}{2}}}}+{\it \_C1}=0,{1\sqrt { \left ( {{\rm e}^{x}} \right ) ^{2}y \left ( x \right ) }{\frac {1}{\sqrt {y \left ( x \right ) }}}}+{\frac {2}{3} \left ( y \left ( x \right ) \right ) ^{{\frac {3}{2}}}}+{\it \_C1}=0 \right \} \]