$1.$ Download the data file from the assignment $$In computer$-$lab test $2$: signal processing$$ on Canvas. The file you need is named $\_\_$q$1.$mat, where and are the day and start time of your laboratory class.

$2.$ Put this file in your MATLAB working folder.

$3.$ Load this file and extract a time array t and a signal array y with the following code

data $=$ load$("$filename$")$;

replacing filename with the name of the file you downloaded.

$4.$ Then

$($a$)$ Take the Fourier transform of these data

$($b$)$ Plot the spectrum for frequencies $0<=$ f $<=10$

$($c$)$ Identify the $$peak$$ frequency $($the frequency component with the largest magnitude$)$ and make MATLAB write it to the screen $($hint: the output of a command is automatically written to the screen if there is no semi$-$colon on the end$).$

Put all of these commands in a m$-$file for submission.