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y″(x)=y(x)f(x)−xy′(x)f(x) ✓ Mathematica : cpu = 0.0513118 (sec), leaf count = 46
{{y(x)→c2x∫1xexp(−∫1K[2]K[1]f(K[1])dK[1])K[2]2dK[2]+c1x}} ✓ Maple : cpu = 0.071 (sec), leaf count = 30
{y(x)=x(∫e∫1x(−2−x2f(x))dxdx_C1+_C2)}
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