We will generate values of the function f(x), defined above, for values of

 

x from –5 to 5, in increments of 0.5. First, we need to ensure that the

 

graph type is set to

in the PLOT SETUP screen (

 

 

 

 

, press

 

them simultaneously, if in RPN mode). The field in front of the Type option

 

will be highlighted. If this field is not already set to

 

 

 

 

, press the

 

soft key

 

and select the

 

option, then press

 

 

.

 

Next, press

to highlight the field in front of the option EQ, and type

 

the function expression: ‘X/(X+10)’

 

 

 

 

 

 

 

 

 

To accept the changes made to the PLOT SETUP screen press

 

 

.

 

You will be returned to normal calculator display.

 

 

 

 

 

 

 

The next step is to access the Table Set-up screen by using the keystroke

 

combination

(i.e., soft key

) – simultaneously if in RPN mode.

 

This will produce a screen where you can select the starting value (Start)

 

and the

increment (Step).

 

the following:

5\@@@OK@@@

 

 

 

 

 

 

 

 

 

 

 

0.5@@@OK@@@0.5@@@OK@@@

(i.e., Zoom factor = 0.5). Toggle

 

the

 

soft menu key until a check mark appears in front of the option

 

Small Font if you so desire

Then press

. This will return you to

 

 

@￿@DEFN@CHK

 

„ö

 

@@@OK@@@@ZOOM@@BIG@F

 

 

@DEFNPage 10-4

 

normal calculator displayFUNCTION

 

 

 

 

 

„ô

 

To see the table, press

(i.e., soft menu key

FUNCTION) – simultaneously

 

if in RPN@CHOOSmode. This will produceFUNCTIONa table of values of x =@@@OK@@@-5,-4.5, …,

 

and the corresponding values of f(x), listed as Y1 by default. You can use

 

the up and down˜arrow keys to move about in the table. You will notice

 

that we did not have to indicate an ending value for the independent

 

variable x. Thus, the table continues beyond the maximum value for x

 

suggested early, namely x = .

 

 

 

 

 

 

L@@@OK@@@

Some options available while the table is visible are

,

 

 

,and

 

:

The

 

, when„õselected, showsEnterthe

definition

of

the independent

variable

Page 131
Image 131
HP 49g You will be returned to normal calculator display, Zoom factor = 0.5. Toggle, To see the table, press Soft menu key