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d2dx2y(x)+d+b(y(x))2+cy(x)+a(y(x))3=0
Mathematica: cpu = 2.224782 (sec), leaf count = 1017 Solve[4F(sin−1((Root[3a#14+4b#13+6c#12+12d#1−6c1&,2]−Root[3a#14+4b#13+6c#12+12d#1−6c1&,4])(y(x)−Root[3a#14+4b#13+6c#12+12d#1−6c1&,1])(Root[3a#14+4b#13+6c#12+12d#1−6c1&,1]−Root[3a#14+4b#13+6c#12+12d#1−6c1&,4])(y(x)−Root[3a#14+4b#13+6c#12+12d#1−6c1&,2]))|(Root[3a#14+4b#13+6c#12+12d#1−6c1&,2]−Root[3a#14+4b#13+6c#12+12d#1−6c1&,3])(Root[3a#14+4b#13+6c#12+12d#1−6c1&,1]−Root[3a#14+4b#13+6c#12+12d#1−6c1&,4])(Root[3a#14+4b#13+6c#12+12d#1−6c1&,1]−Root[3a#14+4b#13+6c#12+12d#1−6c1&,3])(Root[3a#14+4b#13+6c#12+12d#1−6c1&,2]−Root[3a#14+4b#13+6c#12+12d#1−6c1&,4]))2(Root[3a#14+4b#13+6c#12+12d#1−6c1&,1]−Root[3a#14+4b#13+6c#12+12d#1−6c1&,2])2(y(x)−Root[3a#14+4b#13+6c#12+12d#1−6c1&,1])(y(x)−Root[3a#14+4b#13+6c#12+12d#1−6c1&,2])(y(x)−Root[3a#14+4b#13+6c#12+12d#1−6c1&,3])(y(x)−Root[3a#14+4b#13+6c#12+12d#1−6c1&,4])(Root[3a#14+4b#13+6c#12+12d#1−6c1&,2]−Root[3a#14+4b#13+6c#12+12d#1−6c1&,1])2(Root[3a#14+4b#13+6c#12+12d#1−6c1&,1]−Root[3a#14+4b#13+6c#12+12d#1−6c1&,3])(Root[3a#14+4b#13+6c#12+12d#1−6c1&,2]−Root[3a#14+4b#13+6c#12+12d#1−6c1&,4])(−12ay(x)4−23by(x)3−cy(x)2−2dy(x)+c1)=(x+c2)2,y(x)]
Maple: cpu = 0.063 (sec), leaf count = 89 {∫y(x)−61−18_a4a−24b_a3−36c_a2−72d_a+36_C1d_a−x−_C2=0,∫y(x)61−18_a4a−24b_a3−36c_a2−72d_a+36_C1d_a−x−_C2=0}
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