In this problem, you will simulate an analog noisy periodic signal, sample the signal and convert it to a digital signal, and write a function to detect the frequency of the original signal. You MUST attach all your codes with your report. (a) [15 points] Examine the file "Prob_1a. m". Write the function "fn_updateArray(newValue)". This function will save "newValue" at the end of the array (called "arrayWithLatestValues") containing the latest sampled values. Every time a new value is read, the older values will be shifted to the left and the oldest value will be discarded. Run the program a few times and include screenshots of the command window in your report.