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y(3)(x)(y′(x)2+1)−y″(x)2(a+3y′(x))=0 ✗ Mathematica : cpu = 299.998 (sec), leaf count = 0 , timed out
$Aborted
✓ Maple : cpu = 1.503 (sec), leaf count = 789
{y(x)=∫sin(RootOf(e2a_Z_C12_C22a4+2e2a_Z_C12_C2a4x+e2a_Z_C12a4x2+2e2a_Z_C12_C22a2+4e2a_Z_C12_C2a2x+2e2a_Z_C12a2x2−2cos(_Z)ea_Z_C1_C2a3−2cos(_Z)ea_Z_C1a3x+e2a_Z_C12_C22+2e2a_Z_C12_C2x+e2a_Z_C12x2−2cos(_Z)ea_Z_C1_C2a−2cos(_Z)ea_Z_C1ax+(cos(_Z))2a2+(cos(_Z))2−1))cos(RootOf(e2a_Z_C12_C22a4+2e2a_Z_C12_C2a4x+e2a_Z_C12a4x2+2e2a_Z_C12_C22a2+4e2a_Z_C12_C2a2x+2e2a_Z_C12a2x2−2cos(_Z)ea_Z_C1_C2a3−2cos(_Z)ea_Z_C1a3x+e2a_Z_C12_C22+2e2a_Z_C12_C2x+e2a_Z_C12x2−2cos(_Z)ea_Z_C1_C2a−2cos(_Z)ea_Z_C1ax+(cos(_Z))2a2+(cos(_Z))2−1))dx+_C3,y(x)=∫sin(RootOf(e2a_Z_C12_C22a4+2e2a_Z_C12_C2a4x+e2a_Z_C12a4x2+2e2a_Z_C12_C22a2+4e2a_Z_C12_C2a2x+2e2a_Z_C12a2x2+2cos(_Z)ea_Z_C1_C2a3+2cos(_Z)ea_Z_C1a3x+e2a_Z_C12_C22+2e2a_Z_C12_C2x+e2a_Z_C12x2+2cos(_Z)ea_Z_C1_C2a+2cos(_Z)ea_Z_C1ax+(cos(_Z))2a2+(cos(_Z))2−1))cos(RootOf(e2a_Z_C12_C22a4+2e2a_Z_C12_C2a4x+e2a_Z_C12a4x2+2e2a_Z_C12_C22a2+4e2a_Z_C12_C2a2x+2e2a_Z_C12a2x2+2cos(_Z)ea_Z_C1_C2a3+2cos(_Z)ea_Z_C1a3x+e2a_Z_C12_C22+2e2a_Z_C12_C2x+e2a_Z_C12x2+2cos(_Z)ea_Z_C1_C2a+2cos(_Z)ea_Z_C1ax+(cos(_Z))2a2+(cos(_Z))2−1))dx+_C3}
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