HP 39gs Master Guide

4
S
S
O
O
M
M
E
E
K
K
E
E
Y
Y
B
B
O
O
A
A
R
R
D
D
E
E
X
X
A
A
M
M
P
P
L
L
E
E
S
S
Shown below are snapshots of some typical screens (called “views”) which you might see when you press the
keys shown on the previous page. Exactly what you see depends on which aplet is active at the time. See
page
14 for an introduction to aplets.
The Function aplet is used below to illustrate this. The normal use of the Function aplet is to graph and
analyze Cartesian functions. Notice at the bottom of the various screens how the meanings of the row of
unlabelled screen keys change in different views.
The
SYMB key - in this case it is set to graph
3
the function
f
()
= x − x
2
− 7 x + 6 .x
The
PLOT key - used to graph the function.
(The
PLOT SETUP view sets the axes.)
The NUM key showing a tabular view of the function.
(The
NUM SETUP view sets table parameters.)
The
APLET key is used to choose which aplet is active. There are 12
aplets provided with the calculator and more can be downloaded from
the internet.
The MATH key gives access to more than a hundred extra functions,
grouped into categories. The view shown right is part of the Probability
section.
10

HP 39gs Specifications

General

Type	Scientific
Form factor	Pocket
Product color	Gray
Internal memory	0.256 MB

Weight and Dimensions

Weight	249 g
Dimensions (WxDxH)	187 x 94 x 31 mm