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−e−x3/23x+y″(x)+xy′(x)+(x4+14x−9)y(x)=0 ✓ Mathematica : cpu = 0.0763434 (sec), leaf count = 70
{{y(x)→c1e−13(x+9)x+16c2e6x−13(x+9)x−19e3x−13(x+9)xx}}
✓ Maple : cpu = 0.08 (sec), leaf count = 38
{y(x)=e−13x32sinh(3x)_C2+e−13x32cosh(3x)_C1−x9e−13x32}
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