QUESTION 3: (20 Points) a) Consider the mathematical function y-f(x)=x over the interval [-5, 5]. Write MATLAB code to: 1. Generate a vector of x values in the specified interval. 2. Calculate the corresponding y values using the function f(x)=x. 3. Create a 2D plot (line plot) to visualize the function. Include axis labels, a title, and a grid in your plot. Additionally, use different line styles, colors, and markers for the plot. b) Write a script to show that a circle can be represented by x= sin(t) and y= cos(t). t varies from 0 to 2*pi. You should create values for t and plot the values of x and using simple x-y plot. y