In the Matlab example script, there are couple of Figures generated by the 'plot'

function. Download the scripts from the lecture notes and save them as $.$m file.

Note that the functions should be saved separately with a file name the same as

the name of the function as we did in lecture. Modify the 'plot' function by

replacing it by 'subplot' function. Using the 'subplot' function to reorganize these

figures to show $3$ sub$-$figures in one frame. Run your modified script and submit

these figures you generated.

$2.$ In Matlab, when plot time sequence, Matlab by default uses a $$maker$$ to show

each data point as demonstrated in the provided example script. Do some research

and plot the following vector $$data$=$rand$(1,20)$ with and without data $$marker$$

$($Assume you still have the $-$ to connect the consecutive data points$).$

data $=$ rand$(1,20)$;