sech Add x5 tanh asech sec x0 
Mul Mul tanh Add x5 tanh asech sec x0 Mul -1 sech Add x5 tanh asech sec x0 Mul Pow sech asech sec x0 2 Mul Mul tan x0 sec x0 Pow Mul Mul sec x0 sec x0 sqrt Add 1 Mul -1 Pow Mul sec x0 sec x0 -1 -1 