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Mul Pow x6 Add Mul Pow Mul Add acot Add sec x0 x2 x6 x0 x2 x0 -1 Mul Mul x6 log x6 Add Mul x0 Mul Pow Mul Add acot Add sec x0 x2 x6 x0 Add x2 -1 Mul x2 Add Mul x0 Mul -1 Mul Mul tan x0 sec x0 Pow Add 1 Mul Add sec x0 x2 Add sec x0 x2 -1 Add acot Add sec x0 x2 x6 Pow Mul Add acot Add sec x0 x2 x6 x0 x2 