HP 50g Quick Start Manual page 26

56. Next, let's create a folder to store and organize your previous equations and data. Press
key. Press DOWN cursor and then
Press to check the Directory checkmark. Press the OK menu key to accept. A new directory titled, PYTHAG is created.
W
57.
58. Use the DOWN cursor to highlight B. Press ENTER and notice a 1 is placed next to the left of the variable. Continue selecting C
and EQ by using the cursor keys and pressing ENTER until they also are numbered. Now press
move through the previous menu rows. With COPY as an option, press the COPY menu key and the memory tree appears. Select
the PYTHAG directory under HOME and press ENTER. Your objects are now copied to the directory.
59. Select the PYTHAG directory using the cursors and press RIGHT to dive into the folder. You should see the A, B, C , and EQ objects.
Select A and press
L
folder. Now select B, C, and EQ like before, and press the PURGE menu key again. This time press the ALL menu key to delete all
the selected objects. Since you were planning to delete the objects instead of making copies of them, using the MOVE menu key
would have accomplished this with one step.
60. Press CANCEL to exit the filer. Press VAR and notice there is a PYTHA folder on the menu. Press the PYTAH menu key, and your B,
C, and EQ variables appear. Notice that there is no A variable. Press
appears, along with A, B ,and C. Notice that even though there is no A in this folder, the 50g searches upwards in memory,
discovers an A variable in the directory above, and uses it. This behavior can often surprise new users who get an unexpected
answer when using the Computer Algebra System (CAS), because an old X variable is found.
Figure 50
20 Getting Started
and type the letters for PYTHAG. Press ENTER.
]]
, followed by the PURGE and YES menu keys. A should be deleted. Press LEFT cursor to return out of that
followed by 7, and then press ENTER. Your previous EQ
@
Figure 51
and followed by the NEW menu
L
followed by
! L
Figure 52
(PREV) to