3. [20 marks] Define a function f(:2) in MATLAB using a function handle f = Q(x) tan(sin(x)) - sin(tan(x)) Plot the function on the interval (-7, 7) using ezplot. Create a plot of f(c) vs. x for x (-7,7] with spacing 7/256. Add the labels y and x to the y- and x-axes, respectively, and the title "A wiggly function". Derive the supremum (least upper bound) of f(x)? Show how to use the calculations performed in producing your plot to provide confi- dence in your calculation of the supremum