Exercise $2$

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

$3,3\mathrm{.}15,3\mathrm{.}3,$dots,$15,$ and define the function $y=\frac{e^{\frac{t}{10}}cos(2t)}{0\mathrm{.}7t^2+4}($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$,\text{'}$o$\text{'}).$

Now combine the two plots with the command plot $($t$,$y$,\text{'}$o$-\text{'})$ to show the line through

the data points as well as the distinct data points.