coth Pow 0.463647609000806 asech x0 
Mul Mul -1 Pow csch Pow 0.463647609000806 asech x0 2 Mul Pow 0.463647609000806 Add asech x0 -1 Mul -0.304982869653804 Pow Mul Mul x0 x0 sqrt Add 1 Mul -1 Pow Mul x0 x0 -1 -1 