asech tanh sec Add asec x4 x0 
Mul Mul Pow sech sec Add asec x4 x0 2 Mul tan Add asec x4 x0 sec Add asec x4 x0 Pow Mul Mul tanh sec Add asec x4 x0 tanh sec Add asec x4 x0 sqrt Add 1 Mul -1 Pow Mul tanh sec Add asec x4 x0 tanh sec Add asec x4 x0 -1 -1 