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(y(x))2(ddxy(x))2−2xy(x)ddxy(x)+2(y(x))2−x2+a=0
Mathematica: cpu = 0.601076 (sec), leaf count = 70 {{y(x)→−−a+8c1x−4c12−2x22},{y(x)→−a+8c1x−4c12−2x22}}
Maple: cpu = 0.920 (sec), leaf count = 145 {y(x)=−2a+2_C1x−_C1−x2−a,y(x)=2a+2_C1x−_C1−x2−a,y(x)=−−2a+2_C1x−_C1−x2−a,y(x)=−2a+2_C1x−_C1−x2−a,y(x)=−124x2−2a,y(x)=124x2−2a}
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