HP 39gII User manual

HP 39gII graphing calculator
user's guide
Edition1
Part Number NW249-90001

Printing History
Edition 1 November 2011

Contents 1
Contents
Manual conventions ................................................................ a
Notice ................................................................................... b
1 Getting started
On/off, cancel operations........................................................ 1
The display ............................................................................ 2
The keyboard ......................................................................... 4
Menus ................................................................................... 9
Input forms ........................................................................... 10
Mode settings....................................................................... 10
Setting a mode ..................................................................... 11
Mathematical calculations...................................................... 12
Numerical representations...................................................... 19
Complex numbers ................................................................. 20
Catalogs and editors ............................................................. 21
2 Apps and their views
HP Apps .............................................................................. 23
App library...................................................................... 24
App views ....................................................................... 25
Standard app views .............................................................. 27
About the Symbolic view ................................................... 27
Defining an expression (Symbolic view) .............................. 28
Evaluating expressions ...................................................... 29
About the Plot view........................................................... 31
Plot setup......................................................................... 31
Exploring the graph .......................................................... 33
About the Numeric view.................................................... 42
Setting up the table (Numeric view setup) ............................ 42
Exploring the table of numbers........................................... 43
Building your own table of numbers.................................... 45
BuildYourOwn table keys .................................................. 46
3 Function app
About the Function app.......................................................... 49
Getting started with the Function app.................................. 49
Function app interactive analysis............................................. 54
4 Solve app
About the Solve app.............................................................. 61

2 Contents
Getting started with the Solve app ......................................62
Interpreting results .................................................................66
Multiple solutions...................................................................67
Using variables in equations ...................................................68
5 Statistics 1Var app
About the Statistics 1Var app..................................................71
Getting started with the Statistics 1Var app ..........................71
Entering and editing statistical data .........................................75
Computed statistics ................................................................78
Plotting.................................................................................79
Plot types .........................................................................80
Setting up the plot (Plot Setup view).....................................81
Exploring the graph ..........................................................82
6 Statistics 2Var app
About the Statistics 2Var app..................................................83
Getting started with the Statistics 2Var app ..........................83
Entering and editing statistical data.....................................87
Defining a regression model...............................................89
Computed statistics ................................................................91
Plotting.................................................................................93
Plot setup .........................................................................95
Trouble-shooting a plot ......................................................96
Calculating predicted values ..............................................98
7 Inference app
About the Inference app .........................................................99
Getting started with the Inference app .................................99
Importing sample statistics................................................102
Hypothesis tests...................................................................105
One-Sample Z-Test ..........................................................106
Two-Sample Z-Test ..........................................................107
One-Proportion Z-Test ......................................................108
Two-Proportion Z-Test ......................................................109
One-Sample T-Test ..........................................................111
Two-Sample T-Test...........................................................112
Confidence intervals ............................................................113
One-Sample Z-Interval .....................................................113
Two-Sample Z-Interval......................................................114
One-Proportion Z-Interval .................................................115
Two-Proportion Z-Interval..................................................116
One-Sample T-Interval......................................................117

Contents 3
Two-Sample T-Interval...................................................... 117
8 Parametric app
About the Parametric app .................................................... 119
Getting started with the Parametric app............................. 119
9 Polar app
About the Polar app ............................................................ 123
Getting started with the Polar app .................................... 123
10 Sequence app
About the Sequence app...................................................... 127
Getting started with the Sequence app.............................. 127
11 Finance app
About the Finance app ........................................................ 131
Getting Started with the Finance app ................................ 131
Cash flow diagrams ............................................................ 133
Time value of money (TVM) .................................................. 134
Performing TVM calculations ................................................ 135
Calculating Amortizations .................................................... 136
12 Linear Solver app
About the Linear Solver app ................................................. 139
Getting started with the Linear Solver app ......................... 139
13 Triangle Solver app
About the Triangle Solver app .............................................. 143
Getting started with the Triangle Solver app....................... 143
14 The Explorer Apps
Linear Explorer App ............................................................ 147
Quadratic Explorer app....................................................... 148
Trig Explorer app................................................................ 149
15 Extending your App Library
Creating new apps based on existing apps............................ 151
Resetting an app................................................................. 153
Annotating an app with notes............................................... 153
Sending and receiving apps................................................. 153
Managing apps.................................................................. 154
16 Using mathematical functions
Math functions.................................................................... 155
Keyboard functions......................................................... 155

4 Contents
The Math menu...............................................................158
Math functions by category...................................................160
Calculus functions ...........................................................160
Complex number functions ...............................................160
Constants.......................................................................161
Distribution.....................................................................162
Hyperbolic trigonometry ..................................................166
Integer...........................................................................167
List functions...................................................................170
Loop functions ................................................................170
Matrix functions..............................................................171
Polynomial functions........................................................171
Probability functions ........................................................172
Real-number functions......................................................173
Test functions..................................................................177
Trigonometry functions.....................................................178
Units and physical constants .................................................179
Units .............................................................................179
Physical constants ...........................................................181
17 Lists
Introduction ........................................................................183
Create a list in the List Catalog..............................................183
The List Editor .................................................................184
Deleting lists .......................................................................186
Lists in the Home view ..........................................................187
List functions........................................................................188
Finding statistical values for lists ............................................191
18 Matrices
Introduction ........................................................................193
Creating and storing matrices ...............................................194
Working with matrices .........................................................195
Matrix arithmetic .................................................................198
Solving systems of linear equations ........................................200
Matrix functions and commands ............................................202
Argument conventions .....................................................203
Matrix functions...................................................................203
19 Notes and Info
The Notes Catalog ..............................................................209
20 Variables and memory management
Introduction ........................................................................217

Contents 5
Storing and recalling variables ............................................. 218
The Vars menu.................................................................... 220
Home variables .................................................................. 223
Memory Manager............................................................... 225
21 Programming
Introduction ........................................................................ 229
The Program Catalog...................................................... 231
Creating a New Home Program....................................... 232
The Program Editor ......................................................... 233
The HP 39gII Programming Language............................... 241
App programs ............................................................... 247
Program commands........................................................ 254
Variables and Programs .................................................. 277
App Functions ................................................................ 300
22 Reference information
Glossary ............................................................................ 309
Resetting the HP 39gII ......................................................... 311
To erase all memory and reset defaults.............................. 311
If the calculator does not turn on....................................... 311
Batteries ........................................................................ 312
Operating details................................................................ 313
Variables ........................................................................... 313
Home variables.............................................................. 313
App variables..................................................................... 314
Function app variables.................................................... 314
Solve app variables........................................................ 315
Statistics 1Var app variables............................................ 315
Statistics 2Var app variables............................................ 316
Inference app variables................................................... 317
Parametric app variables................................................. 318
Polar app variables ........................................................ 318
Sequence app variables.................................................. 319
Finance app variables..................................................... 320
Linear Solver app variables ............................................. 320
Triangle Solver app variables .......................................... 320
Linear Explorer app variables .......................................... 321
Quadratic Explorer app variables .................................... 321
Trig Explorer app variables ............................................. 321
Functions and Commands .................................................... 322
Math menu functions....................................................... 322
App functions................................................................. 324

6 Contents
Program commands ........................................................325
Constants ...........................................................................326
Program constants...........................................................326
Physical Constants ..........................................................327
Status messages ..................................................................327
23 Appendix: Product Regulatory Information
Federal Communications Commission Notice............................... i
European Union Regulatory Notice........................................... iii

Preface a
P
Preface
Manual conventions
The following conventions are used in this manual to
represent the keys that you press and the menu options
that you choose to perform the described operations.
•Key presses are represented as follows:
e,f,H, etc.
•Shift keys, that is the key functions that you access by
pressing theSkey first, are represented as
follows:
SCLEAR,SMODES,SACOS, etc.
•Numbers and letters are represented normally, as
follows:
5, 7, A, B, etc.
•Menu options, that is, the functions that you select
using the menu keys at the top of the keypad are
represented as follows:
,, .
•Input form fields and choose list items are represented
as follows:
Function, Polar, Parametric
•Your entries as they appear on the command line or
within input forms are represented as follows:
2*X2-3X+5

bPreface
Notice
This manual and any examples contained herein are
provided as-is and are subject to change without notice.
Except to the extent prohibited by law, Hewlett-Packard
Company makes no express or implied warranty of any
kind with regard to this manual and specifically disclaims
the implied warranties and conditions of merchantability
and fitness for a particular purpose and Hewlett-Packard
Company shall not be liable for any errors or for
incidental or consequential damage in connection with
the furnishing, performance or use of this manual and the
examples herein.
©1994–1995, 1999–2000, 2003–2006, 2010–2011
Hewlett-Packard Development Company, L.P.
The programs that control your HP 39gII are copyrighted
and all rights are reserved. Reproduction, adaptation, or
translation of those programs without prior written
permission from Hewlett-Packard Company is also
prohibited.
For Hardware warranty information, please refer to the
HP 39gII Quick Start Guide.
For Product Regulatory and Environment Information,
please refer to the HP 39gII Quick Start Guide.

Getting started 1
1
Getting started
On/off, cancel operations
To turn on PressOto turn on the calculator.
To cancel When the calculator is on, theOkey cancels the
current operation.
To turn off PressSOFF to turn the calculator off.
To save power, the calculator turns itself off after several
minutes of inactivity. All stored and displayed information
is saved.
If you see the annunciator, then the calculator needs
fresh batteries.
The Home view Home is the calculator’s home view and is common to all
apps. If you want to perform calculations, or you want to
quit the current activity (such as an app, a program, or an
editor), pressH. All mathematical functions are
available in the Home view. The name of the current app
is displayed in the title of the home view.
Protective cover The calculator is provided with a slide cover to protect the
display and keyboard. Remove the cover by grasping
both sides of it and pulling down.
You can reverse the slide cover and slide it onto the back
of the calculator. This will help you keep track of the cover
while you are using the calculator.
To prolong the life of the calculator, always place the
cover over the display and keyboard when you are not
using the calculator.

2Getting started
The display
To adjust the
contrast
To adjust the contrast, press and hold O, then press
the +or wkeys to increase or decrease the
contrast. The contrast will change with each press of the
+or wkeys.
To clear the display •Press CANCEL to clear the edit line.
•PressSCLEAR once to clear an active edit line and
again to clear the display history.
Parts of the
display
Menu key labels. The top row of keys on the HP 39gII
keyboard (F1-F6) are the menu keys. These keys give you
access to the menu items shown at the bottom of the
display. is the label for the first menu key in the
figure above. "Press " means press the F1 menu key.
Edit line. The line of current entry.
History. The Home display (H) shows up to 6 lines
of history: the most recent input and output. Older lines
scroll off the top of the display but are retained in
memory.
Title. The name of the current app is displayed at the top
of the Home view. RAD or DEG specifies whether Radians
or Degrees is the current angle measurement mode. The
and symbols indicate there is more history in the
display. Press\and=to scroll in the history display.
Title
Edit line
History
Menu key
labels

Getting started 3
Annunciators. Annunciators are symbols that appear
above the title bar and give you important status
information.
Annunciator Description
To activate, pressS. Shift in
effect for next keystroke. To
cancel, pressSagain.
To activate, pressA. Alpha in
effect for next keystroke. To lock,
pressAagain. To cancel,
pressAa third time.
To activate, pressAS.
Lower-case alpha in effect for next
keystroke. To lock, pressA
again. To cancel, pressAa
third time. To switch to upper-
case, pressS.
Low battery power.
Busy.
Data is being transferred via
cable.

4Getting started
The keyboard
Menu keys •On the calculator keyboard, the keys in the top row of
keys (labeled F1-F16) are called menu keys. Their
meanings depend on the context; that is, the view
you are in.
•The bottom line of the display shows the labels for the
menu keys’ current meanings.
App control keys
The app control keys are:
Number Feature HP 39gII
1 256 x 128 pixel display
2 Context-sensitive menu
3 F1-F6 menu keys
4HPAppskeys
5Modes
6 Common math and
science functions
7Shiftkeys
8On(cancel)
9LastAnswer(ANS)
10 Enter key
11 Alphabetic entry
12 C a t a lo gs a n d e d i tor s
13 B a c k s p a ce ( C l e a r )
14 Help key
15 C ursor keys
16 U SB C onnec t ivity
Key Meaning
YDisplays the Symbolic view
for the current app.

Getting started 5
Entry/Edit keys The entry and edit keys are:
PDisplays the Plot view for the
current app.
MDisplays the Numeric view
for the current app.
HDisplays the Home view, for
performing calculations.
IDisplays the App Library
menu.
VDisplays the VIEWS menu.
Key Meaning (Continued)
Key Meaning
O(CANCEL)Cancels the current operation if the
calculator is on by pressingO.
PressingS, then OFF turns the
calculator off.
SAccesses the function printed at the
bottom left of a key.
AAccesses the alphabetical
characters printed at the bottom
right of a key. PressAtwice to
lock this shift so you can enter a
string of characters.
EEnters an input or executes an
operation. In calculations, E
acts like “=”. When or
is present as a menu key,
Eacts the same as pressing
or .
-Enters a negative number. To enter
–25, press -25. Note: this is
not the same operation that the
subtraction key performs (w).

6Getting started
Shifted keystrokes
There are two shift keys that you use to access the
operations and characters printed on the bottom of the
keys: Sand A.
dEnters the independent variable by
inserting X, T, θ, or N into the edit
line, depending on the current
active app.
CBackspace. Deletes the character to
the left of the cursor.
SCLEAR
Clears all data on the screen. On a
settings screen, for example Plot
Setup, SCLEAR returns all
settings to their default values.
<>=\ Moves the cursor around the
display. PressSfirst to move to
the beginning, end, top or bottom.
SCHARS
Displays a menu of all available
characters. To type one, use the
arrow keys to highlight it, and press
. To select multiple
characters, select each and press
, then press .
Key Meaning (Continued)
Key Description
SPressSto access the operations
printed on the bottom (or bottom left)
of a key. For instance, to access the
Modes input form, pressSand
then pressHbecause Modes is
printed on the bottom of the Home
key.

Getting started 7
Help PressSV(Help) to enter the HP 39gII built-in Help
system. The Help system always opens in your current
context or view, giving you information about the current
view and its menu items. Once in the Help system, you
can navigate to other topics and find help on any view or
command.
Example:
PressIand select Function. PressSV(Help)
to get help on the purpose of the Function App.
Math keys Home (H) is the place to do calculations.
Keyboard keys. The most common operations are
available from the keyboard, such as the arithmetic (like
+) and trigonometric (like e) functions. Press
Eto complete the operation: Sj256E
displays 16.
.
Math menu. Pressb
to open the Math menu. The
Math menu is a
comprehensive list of math
functions that do not appear
on the keyboard. It also
includes categories for all other functions and constants.
The functions are grouped by category, ranging in
alphabetical order from Calculus to Trigonometry.
•Use the up- and down-arrow keys to scroll through
the list. Use the right- and left-arrow keys to move
between the category and item columns.
APress theAkey to access the
alphabetic character printed on the
bottom right of a key. For instance, to
type Z, pressAand then
presszbecause Z is printed on
the bottom right of thezkey. For
a lower case letter, pressAthen
S. To type more than one letter,
pressAa second time to lock the
Alpha shift.
Key Description (Continued)

8Getting started
•Press to insert the selected command into
the edit line at the curent cursor position.
•Press to dismiss the Math menu without
selecting a command.
•Press to attach units to a number in the
edit line.
•Press to display a menu of physical
constants from the fields of chemistry, physics,
and quantum mechanics. You can use these
constants in calculations.
•Press to return to the Math menu.
See the chapter Using Mathematical Functions for details.
HINT When using the Math menu, or any menu on the HP 39gII,
the categories and items are numbered for your
convenience. For example, ITERATE is the first item
under Loop, which is the eighth category. With the Math
menu open, pressqxto insert the ITERATE
function in the edit line at the cursor position. If there are
more than 9 items in a category, the letters A, B, C, etc.
are used. For example, the Matrix category uses the
number 8. In this category, the RREF command uses the
letter H. With the Math menu open, pressrhto
insert the RREF command into the edit line. You do not
need to pressAto access the letter you want.
Program
commands
PressingSCMDS displays the list of Program
Commands. See the chapter Programming for more
details.
Inactive keys If you press a key that does not operate in the current
context, a warning symbol like this appears. There is
no beep.
!

Getting started 9
Menus
A menu offers you a choice
of items. Menus are
displayed in 1-3 columns.
•The arrow means more
items below.
•The arrow means more
items above.
To search a menu •Press\or=to scroll through the list. If you press
S\orS=, you’ll go all the way to the
end or the beginning of the list. Highlight the item you
want to select, then press (orE).
•If there are two columns, the left column shows
general categories and the right column shows
specific contents within a category. Highlight a
general category in the left column, then highlight an
item in the right column. The list in the right column
changes when a different category is highlighted.
•If there are three columns, the left column shows a
general category while the second column shows a
useful sub-category. Highlight a general category,
then highlight a sub-category of interest. Finally, select
an item from the third column.
•To speed-search a list, type the number or letter of the
category, followed by the number or letter of the item.
For example, to find the List category inb,
pressp.
To cancel a menu PressO(for CANCEL)or . This cancels the
current operation.

10 Getting started
Input forms
An input form shows several fields of information for you
to examine and specify. After highlighting the field to
edit, you can enter or edit a number (or expression). You
can also select options from a list ( ). Some input
forms include items to check ( ). See below for
example input forms.
Reset input form
values
To reset a field to its default value in an input form, move
the cursor to that field and pressC. To reset all field
values in the input form to their default values,
pressSCLEAR.
Mode settings
You use the Modes input form to set the modes for Home.
HINT Although the numeric setting in Modes affects only Home,
the angle setting controls Home and the current app. The
angle setting selected in Modes is the angle setting used
in both Home and the current app. To further configure an
app, you use the SETUP keys (SY, SP,
andSM).
PressSH(Modes) to enter the Home Modes input
form. Press (F4) to enter the second page of the
form and press (F3) to return to the first page
Setting Options
Angle
Measure
Angle values are:
Degrees. 360 degrees in a circle.
Radians. 2πradians in a circle.
The angle mode you set is the angle
setting used in both Home and the
current app. This is done to ensure that
trigonometric calculations done in the
current app and Home give the same
result.