LEXIBOOK GC500i Instruction Manual page 44

GB
Enlarge the graph again to check the location of the pointer.
Activate the Trace function and move the pointer again.
View the x-coordinate value.
Press
SHIFT
Press
Trace
As you can see above, the Trace and Zoom functions can be used to locate the pointer at an approximate
point, and then SHIFT value produces a readout of the coordinates.
To return the graph to its original size, press
(Important)
The pointer does not move at fixed intervals. It follows the dots on the display. Because of this , this
values provided for coordinates are approximate.
*** The Trace function only be used immediately after a graph is drawn. This function cannot be used if
other calculations or operations (except
been drawn.
*** The x-y coordinate values consist of a 10 digits (max.) mantissa or a 7 digits (max) mantissa plus a 2
digits exponent. Negative values are one digit shorter because one digit is used for the negative sign.
*** The Trace function cannot be written into a program.
*** The Trace function can be used during a "Disp" display.
*** When the format "
by pressing
EXE
value remains on the display. After the Trace function is executed and the text display is brought up using
the key, pressing
G↔T
Examine the above using
3.2.6 Plot function
The Plot function is used to mark a point on the screen of a graph display. The point can be moved left,
right, up and down using the cursor keys, and the coordinates for the graph displayed can be read. Two
points can also be connected by a straight line.
- 44 -
SHIFT Zoomxf
~
Trace SHIFT X↔Y
SHIFT
Value
to display the x-coordinate.
X↔Y
SHIFT X↔Y
again to exit the Trace function.
Trace
SHIFT Zoom org
SHIFT Zoom org
Range Factor
formula
Graph Graph
directly after executing the Trace function during halt status, the previous coordinate
causes the next graph to appear and the coordinate value to clear.
EXE
Graph ALPHA X
x 2
x =
-1.705882353
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