HP 48gx User Manual

Step 4: You can see that there are three real roots (where the plot
crosses the z-axis, but you cannot see the whole function
very well. Zoom the vertical scale out to display the plot
better. (Vertical Zoom Out is one of 15 different kinds of
zoom available to you).
IN
[200ci.) [TRACE] FCM EDIT JCANCL
Step 5: Find a root. Once the HP 48 finds a root, the cursor will be
positioned as close to the root as possible, the calculated
value will be shown on the display and a tagged copy of the
root placed on the Stack.
tl
kKOOT: -1.1B14632914
Step 6: Find a different root. Move the cursor over towards the
left-most root.
(4) as needed 1 |
(to redisplay the menu)
| DJ
ROOT: -2.5104297636
Step 7: Find the third root.
(») as needed
(to redisplay the menu) f\ |
; 4
KOOT: 2.04160529082
6-14 Plotting Equations and Analyzing Graphs

HP 48gx Specifications

General

Model	HP 48gx
Type	Graphing Calculator
Display Type	LCD
Display Size	131x64 pixels
Memory	128 KB RAM
Expandable Memory	Yes, via expansion cards
Release Year	1993
Processor	Saturn
Programming Language	RPL
Power Supply	3x AAA batteries
Weight	255 g (9 ounces)