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Mul Pow sech Add 1 csc Pow sqrt Pow x1 x2 Mul Add -2 x1 x0 2 Mul Mul Mul -1 cot Pow sqrt Pow x1 x2 Mul Add -2 x1 x0 csc Pow sqrt Pow x1 x2 Mul Add -2 x1 x0 Mul Pow sqrt Pow x1 x2 Add Mul Add -2 x1 x0 -1 Mul Mul sqrt Pow x1 x2 log sqrt Pow x1 x2 Add -2 x1 