Programming with MATLAB

kindly do not leave any question undone. its just 3 parts from my 50 question assignment. i am asking in parts not the whole thing please dont leave this small part undone. I'm highly charged for such small answers

Exercise 2: Implement and plot the following functions: 1. fi(x) = sin(2x) + 2 cos(2x) f(x) = sin(2x) + 2 cos(2x) where x takes the values between 0 to 161 with an interval of r/8. Make sure to set the proper labels, title and legend for your graph and mark the graph with green, dashed-dot line with used as marker. f(x) = {x? 0 SX S10 - 10 5x