exp Pow Pow x2 x0 cot sech atanh Add 3.14159265358979 x2 
Mul exp Pow Pow x2 x0 cot sech atanh Add 3.14159265358979 x2 Mul Pow Pow x2 x0 Add cot sech atanh Add 3.14159265358979 x2 -1 Mul cot sech atanh Add 3.14159265358979 x2 Mul Pow x2 Add x0 -1 Mul x2 log x2 