58
T
T
h
h
e
e
M
M
e
e
n
n
u
u
B
B
a
a
r
r
f
f
u
u
n
n
c
c
t
t
i
i
o
o
n
n
s
s
In the examples and explanations which follow, the functions and settings
used are:
Trace
is quite a useful tool. The dot next to
the word means that it is currently switched on.
If yours isn’t then press the key underneath to
turn it on. Leave it on for now.
Press the left arrow 5 or 6 times to see a similar display to that shown right.
Pressing up or down arrow moves from function to function.
The order used is not related graph but solely to the order that they are
defined in the SYMB view. If it is turned off then the cursor is free to move
anywhere on the screen. Try this and then turn it on again.
Defn
Press the key labeled
(short for
Definition). You will find that the equation is
now listed at the bottom of the screen.
The up/down arrows will move the cursor from F1(X) to F2(X), with the
definition changing as it does so. If Trace is switched off then Defn will not
work correctly.
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