Exercise $2$

Use the linspace command or the colon operator : to create a vector t with entries

$6,6\mathrm{.}3,6\mathrm{.}6,...,30,$ and define the function y $=$ et$/5$ cos$(2$t$)$

$0\mathrm{.}7$t$2+15($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.