"Exercises" HP Prime Book

[roadrunner]

Are you going back to CAS each time before tapping ENTER? Sorry, I should have been clearer on that point.

The whole procedure is:

In CAS, first clear lists L1 and L2 by typing:

L1:={};L2:={}

I also forgot to mention that

Then type:

(L1(0):=distance(GE,GB)),(L2(0):=area(GG))

then tap Plot to go to plot view, change the slider, tap ESC twice to go back to CAS, tap enter, repeat

After a few tries, the CAS stack should look something like this:

   

-road