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d2dx2y(x)=−2ncosh(x)ddxy(x)sinh(x)−(−a2+n2)y(x)=0
Mathematica: cpu = 0.841107 (sec), leaf count = 273 {{y(x)→c2(−1)12(−2n−1)+1tanh2(x)14(−2n−1)+1(tanh2(x)−1)12(a+n2+12(a+n+1)+12(−2n−1)+1)2F1(12(−2n−1)+a+n2+1,12(−2n−1)+12(a+n+1)+1;12(−2n−1)+2;tanh2(x))exp(12(n−1)log(1−tanh2(x))−nlog(tanh(x)))tanh(x)+c1tanh2(x)14(2n+1)(tanh2(x)−1)12(a+n2+12(a+n+1)+12(−2n−1)+1)2F1(a+n2,12(a+n+1);12(2n+1);tanh2(x))exp(12(n−1)log(1−tanh2(x))−nlog(tanh(x)))tanh(x)}}
Maple: cpu = 0.109 (sec), leaf count = 43 {y(x)=_C1(sinh(x))−n+12LegendreP(a−12,n−12,cosh(x))+_C2(sinh(x))−n+12LegendreQ(a−12,n−12,cosh(x))}
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