please use Matlab, number 4

4. Graph the function spikex) fandfprime for spike. 32-2. Find an appropriate window to for a. There are two values of x for which the derivative does not exist. What are these values, and why does the derivative not exist there? b. Find the derivative of fat those values of x where it exists, and add it to the Plot window c. Look at your plot. Does your conjecture from Problem 3 still hold? Do you need to make any modifications? If so, make your additions or corrections below