Value Option
The value option is used to evaluate a selected function for a particular
value of x. Access the value option by pressing 
.
Type 
or 
.
"Eval x =" appears at the bottom of the screen.
Type a value of x. For x = 2, type "2" and the corresponding value of
y will be displayed.
The "1" in the upper right hand corner indicates that the first function
is being evaluated. The "X" on the graph indicates the location of the
point (x,y).
Note: The typed value of x must be between the Xmin and Xmax values entered in 
.
To evaluate other functions already graphed, press the up or down cursor
keys.
Notice the "1" in the upper right hand corner changes.
For function "2", press 
.
For function "3", press ,
again.
