Problem:
Draw the graphs of the function

f(x) = |x|

and its derivative on the closed interval [-2,2].


Visualization:

  1. Press the GRAPH key and then pick \y(x)= by pressing the F1 key.
  2. If necessary, keep pressing the F4 key until only \y1= appears on the screen.
  3. Be sure that PLOTS 1, 2 and 3 are turned-off.
  4. At the prompt \y1=, type in

    abs x

    and press the ENTER key.

    There are two ways to enter "abs" :

  5. At the prompt \y2= , type in

    der1(y1,x,x)

    You can simply type in "der1" or it can be found by pressing 2nd CALC and then F3.

  6. The WINDOW settings for the graph above is  [-2, 2] × [-3, 3]:

    Go to the WINDOW menu by pressing 2nd M2.

  7. Press the F5 key to pick GRAPH from the menu. You should see the graphs

This page was created with the help of Chris O'Brien.