let f(x)=sin(x)+cos(x)+tan(x)+arcsin(x)+arccos(x)+arctan(x). if M and m are maximum and minimum values of f(x), then thier arithmetic mean is equal to

Question

let f(x)=sin(x)+cos(x)+tan(x)+arcsin(x)+arccos(x)+arctan(x). if m&m are maximum and minimum values of f(x), then thier arithmetic mean is equal to

Answer 1

(M + m) / 2?