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Box…
This is the most useful of the
commands. When you choose this
option a message will appear at the bottom of the screen
asking you to Select first corner.
If you use the arrow keys to move the cursor to one
corner of a rectangle containing the part of the graph you
want to zoom into and then press ENTER, the message
will change to Select second corner.
As you move the cursor this time to a
position at the diagonally opposite
corner of a box, the box will appear on
the screen.
Pressing expands the box to fill
the screen.
You’ll notice that the scale has been
disrupted so that the labels are no
longer very helpful. PLOT SETUP would give better end points for the
axes or let you switch off the labels option.
Rather than doing that however, scroll down the menu to a new
option of UnZoom. This option puts the
screen back to the way it was before you
did the
.
Calculator Tip
Zoom is very handy for allowing you to examine small
sections of a graph in detail, but remember Un-Zoom!
The cursor
positioned at
one corner of a
…and at the
other corner.
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