acos Mul E sqrt Add x0 -2.09471254726110 
Mul -1 Mul Mul E Pow Mul 2 sqrt Add x0 -2.09471254726110 -1 Pow sqrt Add 1 Mul -1 Mul Mul E sqrt Add x0 -2.09471254726110 Mul E sqrt Add x0 -2.09471254726110 -1 