tanh Pow Add acoth Mul -2 acos x0 x3 Add Add sech x1 Add 1.58740105196820 sech x2 x6 
Mul Pow sech Pow Add acoth Mul -2 acos x0 x3 Add Add sech x1 Add 1.58740105196820 sech x2 x6 2 Mul Pow Add acoth Mul -2 acos x0 x3 Add Add Add sech x1 Add 1.58740105196820 sech x2 x6 -1 Mul Add Add sech x1 Add 1.58740105196820 sech x2 x6 Mul Mul -2 Mul -1 Pow sqrt Add 1 Mul -1 Mul x0 x0 -1 Pow Add 1 Mul -1 Mul Mul -2 acos x0 Mul -2 acos x0 -1 