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ddxy(x)=2a−x2y(x)+2a(y(x))4x2−16a2x(y(x))2+32a3=0
Mathematica: cpu = 0.515566 (sec), leaf count = 1347 {{y(x)→−4a+ec112a+4608x2a4−128x3a3+1152ec1x2a3−96ec1x3a2−432x3a2−24e2c1x3a−2e3c1x3+4(−192xa3−(4a+ec1)2x2)3+(4608x2a4−128x3a3+1152ec1x2a3−96ec1x3a2−432x3a2−24e2c1x3a−2e3c1x3)231223ax−−192xa3−(4a+ec1)2x26 22/3ax4608x2a4−128x3a3+1152ec1x2a3−96ec1x3a2−432x3a2−24e2c1x3a−2e3c1x3+4(−192xa3−(4a+ec1)2x2)3+(4608x2a4−128x3a3+1152ec1x2a3−96ec1x3a2−432x3a2−24e2c1x3a−2e3c1x3)23},{y(x)→−4a+ec112a−(1−i3)4608x2a4−128x3a3+1152ec1x2a3−96ec1x3a2−432x3a2−24e2c1x3a−2e3c1x3+4(−192xa3−(4a+ec1)2x2)3+(4608x2a4−128x3a3+1152ec1x2a3−96ec1x3a2−432x3a2−24e2c1x3a−2e3c1x3)232423ax+(1+i3)(−192xa3−(4a+ec1)2x2)12 22/3ax4608x2a4−128x3a3+1152ec1x2a3−96ec1x3a2−432x3a2−24e2c1x3a−2e3c1x3+4(−192xa3−(4a+ec1)2x2)3+(4608x2a4−128x3a3+1152ec1x2a3−96ec1x3a2−432x3a2−24e2c1x3a−2e3c1x3)23},{y(x)→−4a+ec112a−(1+i3)4608x2a4−128x3a3+1152ec1x2a3−96ec1x3a2−432x3a2−24e2c1x3a−2e3c1x3+4(−192xa3−(4a+ec1)2x2)3+(4608x2a4−128x3a3+1152ec1x2a3−96ec1x3a2−432x3a2−24e2c1x3a−2e3c1x3)232423ax+(1−i3)(−192xa3−(4a+ec1)2x2)12 22/3ax4608x2a4−128x3a3+1152ec1x2a3−96ec1x3a2−432x3a2−24e2c1x3a−2e3c1x3+4(−192xa3−(4a+ec1)2x2)3+(4608x2a4−128x3a3+1152ec1x2a3−96ec1x3a2−432x3a2−24e2c1x3a−2e3c1x3)23}}
Maple: cpu = 0.561 (sec), leaf count = 1096 {y(x)=112_C1ax(−216_C13a2x+576a3_C12+12−49152_C14a7−324_C14a2x3+1728_C13a3x2−1536_C12a4x−3_C1x3+12ax2x_C1a−x)x23+192a3_C12+x12_C1a1(−216_C13a2x+576a3_C12+12−49152_C14a7−324_C14a2x3+1728_C13a3x2−1536_C12a4x−3_C1x3+12ax2x_C1a−x)x23−112_C1a,y(x)=−124_C1ax(−216_C13a2x+576a3_C12+12−49152_C14a7−324_C14a2x3+1728_C13a3x2−1536_C12a4x−3_C1x3+12ax2x_C1a−x)x23−192a3_C12+x24_C1a1(−216_C13a2x+576a3_C12+12−49152_C14a7−324_C14a2x3+1728_C13a3x2−1536_C12a4x−3_C1x3+12ax2x_C1a−x)x23−112_C1a−i23(112_C1ax(−216_C13a2x+576a3_C12+12−49152_C14a7−324_C14a2x3+1728_C13a3x2−1536_C12a4x−3_C1x3+12ax2x_C1a−x)x23−192a3_C12+x12_C1a1(−216_C13a2x+576a3_C12+12−49152_C14a7−324_C14a2x3+1728_C13a3x2−1536_C12a4x−3_C1x3+12ax2x_C1a−x)x23),y(x)=−124_C1ax(−216_C13a2x+576a3_C12+12−49152_C14a7−324_C14a2x3+1728_C13a3x2−1536_C12a4x−3_C1x3+12ax2x_C1a−x)x23−192a3_C12+x24_C1a1(−216_C13a2x+576a3_C12+12−49152_C14a7−324_C14a2x3+1728_C13a3x2−1536_C12a4x−3_C1x3+12ax2x_C1a−x)x23−112_C1a+i23(112_C1ax(−216_C13a2x+576a3_C12+12−49152_C14a7−324_C14a2x3+1728_C13a3x2−1536_C12a4x−3_C1x3+12ax2x_C1a−x)x23−192a3_C12+x12_C1a1(−216_C13a2x+576a3_C12+12−49152_C14a7−324_C14a2x3+1728_C13a3x2−1536_C12a4x−3_C1x3+12ax2x_C1a−x)x23)}
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