problem 3. Write the MATLAB code to plot the above hat function over the interval [2, 2].

f(x)=1+x,if1x01x,if01 The first line of your function should read: function fvals = HatFun (xvals) Like many built-in functions in MATLAB, your function should allow the input xvals to be a vector. That is, given a list of inputs x1,x2,,xn stored in xvals, your function should generate a list of outputs f(x1),f(x2),,f(xn) stored in fvals. Problem 3. Write the MATLAB code to plot the above "hat function" over the interval [2,2]. Your code should be included in the script ProgrammingHomework01.m