. Use the linspace command or the colon operator : to create a vector t with entries 2, 2.1, 2.2, . . . , 10, and define the function y = (e t/5 cos(2t))/ (0.8t^3 + 13) (make sure you use ";" to suppress the output for both t and y). (a) Plot the function y in black and include a title with the expression for y. (b) Make the same plot as in part (a), but rather than displaying the graph as a curve, show the unconnected data points. 

To display the data points with small circles, use plot(t,y,'o'). Now combine the two plots with the command plot((t,y,'o-') to show the line through the data points as well as the distinct data points.