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d2dx2y(x)−3y(x)ddxy(x)−3a(y(x))2−4a2y(x)−b=0
Mathematica: cpu = 11.895010 (sec), leaf count = 3227 {{y(x)→−2((−1)a3/24a3−3b−2a34a3+12−3(a3/24a3−3b−2a3)4a3+34a6−3a3b4a3+13a3/24a3−3b−2a34a3−4a6−3a3b4a3a−a3/24a3−3b−2a32a3+4a6−3a3b2a3+1ba3/24a3−3b−2a34a3−4a6−3a3b4a3−1(a3/24a3−3b−2a34a3−4a6−3a3b4a3)e−2axI4a6−3a3b2a3(32be−2axbc1a)c1a3/24a3−3b−2a34a3−4a6−3a3b4a3Γ(4a6−3a3b2a3+1)(e−2axb)a3/24a3−3b−2a34a3−4a6−3a3b4a3−1+(−1)a3/24a3−3b−2a34a3+12−3(a3/24a3−3b−2a3)4a3+34a6−3a3b4a3−323a3/24a3−3b−2a34a3−4a6−3a3b4a3+12a4a6−3a3b2a3−a3/24a3−3b−2a32a3ba3/24a3−3b−2a34a3−4a6−3a3b4a3−12e−2ax(I4a6−3a3b2a3−1(32be−2axbc1a)+I4a6−3a3b2a3+1(32be−2axbc1a))c1a3/24a3−3b−2a34a3−4a6−3a3b4a3+12Γ(4a6−3a3b2a3+1)(e−2axb)a3/24a3−3b−2a34a3−4a6−3a3b4a3−12+c2((−1)−2a3−4a3−3ba3/24a3+12−3(−2a3−4a3−3ba3/2)4a3−34a6−3a3b4a3−323−2a3−4a3−3ba3/24a3+4a6−3a3b4a3+12b−2a3−4a3−3ba3/24a3+4a6−3a3b4a3−12e−2ax(e−2axb)−2a3−4a3−3ba3/24a3+4a6−3a3b4a3−12(I−4a6−3a3b2a3−1(32be−2axbc1a)+I1−4a6−3a3b2a3(32be−2axbc1a))c1−2a3−4a3−3ba3/24a3+4a6−3a3b4a3+12Γ(1−4a6−3a3b2a3)a−−2a3−4a3−3ba3/22a3−4a6−3a3b2a3+(−1)−2a3−4a3−3ba3/24a3+12−3(−2a3−4a3−3ba3/2)4a3−34a6−3a3b4a3+13−2a3−4a3−3ba3/24a3+4a6−3a3b4a3b−2a3−4a3−3ba3/24a3+4a6−3a3b4a3−1(−2a3−4a3−3ba3/24a3+4a6−3a3b4a3)e−2ax(e−2axb)−2a3−4a3−3ba3/24a3+4a6−3a3b4a3−1I−4a6−3a3b2a3(32be−2axbc1a)c1−2a3−4a3−3ba3/24a3+4a6−3a3b4a3Γ(1−4a6−3a3b2a3)a−−2a3−4a3−3ba3/22a3−4a6−3a3b2a3+1))3((−1)−2a3−4a3−3ba3/24a32−3(−2a3−4a3−3ba3/2)4a3−34a6−3a3b4a33−2a3−4a3−3ba3/24a3+4a6−3a3b4a3b−2a3−4a3−3ba3/24a3+4a6−3a3b4a3(e−2axb)−2a3−4a3−3ba3/24a3+4a6−3a3b4a3I−4a6−3a3b2a3(32be−2axbc1a)c1−2a3−4a3−3ba3/24a3+4a6−3a3b4a3c2Γ(1−4a6−3a3b2a3)a−−2a3−4a3−3ba3/22a3−4a6−3a3b2a3+(−1)a3/24a3−3b−2a34a3234a6−3a3b4a3−3(a3/24a3−3b−2a3)4a33a3/24a3−3b−2a34a3−4a6−3a3b4a3ba3/24a3−3b−2a34a3−4a6−3a3b4a3(e−2axb)a3/24a3−3b−2a34a3−4a6−3a3b4a3I4a6−3a3b2a3(32be−2axbc1a)c1a3/24a3−3b−2a34a3−4a6−3a3b4a3Γ(4a6−3a3b2a3+1)a4a6−3a3b2a3−a3/24a3−3b−2a32a3)}}
Maple: cpu = 0.405 (sec), leaf count = 803 {∫y(x)−6a2(−12_aa3−9_a2a2+(RootOf(2K1/24a3−3b(4a3−3b)aa(−1/2_Za2)_C1a2+3K1/24a3−3b(4a3−3b)aa(−1/2_Za2)_C1a_a+K1/24a3−3b(4a3−3b)aa(−1/2_Za2)4a4−3ab_C1+2I−1/24a3−3b(4a3−3b)aa(−1/2_Za2)a2+3I−1/24a3−3b(4a3−3b)aa(−1/2_Za2)a_a+_ZK1/2−4a3+2(4a3−3b)aa+3b(4a3−3b)aa(−1/2_Za2)_C1+4a4−3abI−1/24a3−3b(4a3−3b)aa(−1/2_Za2)−_ZI1/2−4a3+2(4a3−3b)aa+3b(4a3−3b)aa(−1/2_Za2)))2−3ab)−1d_a−x−_C2=0,∫y(x)−6a2(−12_aa3−9_a2a2+(RootOf(2K1/24a3−3b(4a3−3b)aa(1/2_Za2)_C1a2+3K1/24a3−3b(4a3−3b)aa(1/2_Za2)_C1a_a+K1/24a3−3b(4a3−3b)aa(1/2_Za2)4a4−3ab_C1+2I−1/24a3−3b(4a3−3b)aa(1/2_Za2)a2+3I−1/24a3−3b(4a3−3b)aa(1/2_Za2)a_a+_ZK1/2−4a3+2(4a3−3b)aa+3b(4a3−3b)aa(1/2_Za2)_C1+4a4−3abI−1/24a3−3b(4a3−3b)aa(1/2_Za2)−_ZI1/2−4a3+2(4a3−3b)aa+3b(4a3−3b)aa(1/2_Za2)))2−3ab)−1d_a−x−_C2=0}
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