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−3y′(x)2+2y(x)y″(x)−4y(x)2=0 ✓ Mathematica : cpu = 0.104442 (sec), leaf count = 17
{{y(x)→c2sec2(x+2c1)}} ✓ Maple : cpu = 0.393 (sec), leaf count = 34
{y(x)=4((_C12−_C22)(sin(x))2−2_C1_C2sin(x)cos(x)+_C22)−1}
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