Q2. Write a program to calculate the value of f(x), the values of x and n are determined by user and u is the average of x. For example, Li=? Xi = x [0] + x[1] + x[2], where xi is series of value in data set (x[i]). (10 marks) n n f(x) = 2x[i] - x[i] i=0 i=0