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y″(x)(−6x(a1+a2+a3)+3a1a2+3a1a3+3a2a3+9x2)+2(x−a1)(x−a2)(x−a3)y(3)(x)−2(b+(n2+n−3)x)y′(x)−n(n+1)y(x)=0 ✗ Mathematica : cpu = 66.496 (sec), leaf count = 0 , DifferentialRoot result
\left \{\left \{y(x)\to \text {DifferentialRoot}\left (\{\unicode {f818},\unicode {f817}\}\unicode {f4a1}\left \{-n (n+1) \unicode {f818}(\unicode {f817})-2 \left (\unicode {f817} n^2+\unicode {f817} n-3 \unicode {f817}+b\right ) \unicode {f818}'(\unicode {f817})+3 \left (3 \unicode {f817}^2-2 \text {a1} \unicode {f817}-2 \text {a2} \unicode {f817}-2 \text {a3} \unicode {f817}+\text {a1} \text {a2}+\text {a1} \text {a3}+\text {a2} \text {a3}\right ) \unicode {f818}''(\unicode {f817})-2 (\text {a1}-\unicode {f817}) (\text {a2}-\unicode {f817}) (\text {a3}-\unicode {f817}) \unicode {f818}^{(3)}(\unicode {f817})=0,\unicode {f818}(0)=c_1,\unicode {f818}'(0)=c_2,\unicode {f818}''(0)=c_3\right \},\langle \langle \rangle \rangle \right )(x)\right \}\right \}\left \{\left \{y(x)\to \text {DifferentialRoot}\left (\{\unicode {f818},\unicode {f817}\}\unicode {f4a1}\left \{-n (n+1) \unicode {f818}(\unicode {f817})-2 \left (\unicode {f817} n^2+\unicode {f817} n-3 \unicode {f817}+b\right ) \unicode {f818}'(\unicode {f817})+3 \left (3 \unicode {f817}^2-2 \text {a1} \unicode {f817}-2 \text {a2} \unicode {f817}-2 \text {a3} \unicode {f817}+\text {a1} \text {a2}+\text {a1} \text {a3}+\text {a2} \text {a3}\right ) \unicode {f818}''(\unicode {f817})-2 (\text {a1}-\unicode {f817}) (\text {a2}-\unicode {f817}) (\text {a3}-\unicode {f817}) \unicode {f818}^{(3)}(\unicode {f817})=0,\unicode {f818}(0)=c_1,\unicode {f818}'(0)=c_2,\unicode {f818}''(0)=c_3\right \},\langle \langle \rangle \rangle \right )(x)\right \}\right \}
✓ Maple : cpu = 2.532 (sec), leaf count = 272
{y(x)=_C1(HeunG(a1−a3a2−a3,(n2+n−1)a3+b−a1−a24a2−4a3,−n2,n2+12,12,12,x−a3a2−a3))2+_C3HeunG(a1−a3a2−a3,(n2+n−1)a3+b−a1−a24a2−4a3,−n2,n2+12,12,12,x−a3a2−a3)HeunG(a1−a3a2−a3,(n2+n−3)a3+b4a2−4a3,n2+1,−n2+12,32,12,x−a3a2−a3)−x+a3−(HeunG(a1−a3a2−a3,(n2+n−3)a3+b4a2−4a3,n2+1,−n2+12,32,12,x−a3a2−a3))2_C2(x−a3)}
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