atan(sinh(x)) + sinh(x)*log(cosh(x))
d --(atan(sinh(x)) + sinh(x)*log(cosh(x))) dx
2 cosh(x) sinh (x) ------------ + -------- + cosh(x)*log(cosh(x)) 2 cosh(x) 1 + sinh (x)
/ 2 2 \ | 1 sinh (x) 2*cosh (x) | |3 + ------------ - -------- - --------------- + log(cosh(x))|*sinh(x) | 2 2 2 | | 1 + sinh (x) cosh (x) / 2 \ | \ \1 + sinh (x)/ /
3 2 4 2 3 2 cosh(x) 2*cosh (x) 2*sinh (x) 2*sinh (x) 6*sinh (x)*cosh(x) 8*cosh (x)*sinh (x) 3*cosh(x) + ------------ + cosh(x)*log(cosh(x)) - --------------- - ---------- + ---------- - ------------------ + ------------------- 2 2 cosh(x) 3 2 3 1 + sinh (x) / 2 \ cosh (x) / 2 \ / 2 \ \1 + sinh (x)/ \1 + sinh (x)/ \1 + sinh (x)/