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Chapter 4: Graphing Features
3. Explanations of Various Graphing Keys
The explanations in this section are based on the rectangular coordinates (COORD
RECT).
Y:
Displays the Graph Equation window. Up to 10 different equations
can be entered.
After the graph expression is entered, press E to store the equation.
=
:
The expression can be represented as a graph.
= :
The expression cannot be drawn as a graph.
• Move the cursor pointer to the "=" sign and press E to
change between to-draw and not-to-draw.
Note:
To switch the window back to the calculation screen, simply press
the # key.
G:
Draws a full-screen graph based on the equation(s) entered in the
Graph Equation window. To cancel the graph drawing, press O.
Note:
If no equations are entered in the Graph equation window, only the
vertical (Y) and horizontal (X) axis will be displayed upon pressing
the G key.
t:
Displays the graph values in a table. The default sample increment
value of the graph's X axis is "1". See "11. Tables" on page 93.
W:
Displays the graph window setup. The setup values — the
minimum/maximum X/Y values, and X/Y-axis scale — can be
changed manually:
1. While the graph is displayed
2. The required X-minimum value can be entered here. This limits the
3. Once the "Xmin=" value is entered ("0", for example), press
4. Now the right boundary of the graph can be set. Enter the
74
on the screen, press the
W key. The following
window appears, with the
cursor set at "Xmin=".
left boundary of the graph window. For example, if "Xmin=" is set to "0",
then the portion of the graph's Y-axis to the left will not be displayed.
E. The left limit of the graph is now set, and the cursor
moves to "Xmax=".
required value here ("3", for example), and press E.
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