asec sech log Add pi exp x0 
Mul Mul Mul tanh log Add pi exp x0 Mul -1 sech log Add pi exp x0 Mul exp x0 Pow Add pi exp x0 -1 Pow Mul Mul sqrt Add 1 Mul -1 Pow Mul sech log Add pi exp x0 sech log Add pi exp x0 -1 sech log Add pi exp x0 sech log Add pi exp x0 -1 