HP 48GII User Manual

D - 10 Reserved Variables
Parameter (Command) Description Default Value
(xleft, xright) (XVOL)
Real numbers that specify the width of the view volume.
(
–1, 1 )
(yfar, ynear) (YVOL)
Real numbers that specify the depth of the view volume.
(
–1, 1 )
( zlow, zhigh ) (ZVOL )
Real numbers that specify the height of the view volume.
(
–1, 1 )
(xeye, yeye, zeye) (EYEPT )
Real numbers that specify the point in space from which
the plot is viewed.
(0,
–3, 0 )
(xstep, ystep)
(NUMX, NUMY)
Real numbers that specify the increments between of x-
coordinates and y-coordinates plotted. The increments are
equal to the range for the axes divided by the number of
steps. Used instead of (or in combination with) res.
(10, 8 )
(xxleft, xxright) (XXRNG)
Real numbers that specify the width of the input plane
( domain ). Used by GRIDMAP and PARSURFACE.
(
–1, 1 )
(yyfar, yynear) (YYRNG)
Real numbers that specify the depth of the input plane
( domain ). Used by GRIDMAP and PARSURFACE.
(
–1, 1 )
Parameters without commands can be modified programmatically by storing new values in the list contained in
VPAR ( use the PUT command ).
ZPAR
ZPAR is a variable in the current directory. It contains a list of zooming parameters used by the DRAW
command for all 2-D mathematical and statistical plots.
Parameter (Command) Description Default Value
h-factor
Real number that specifies the horizontal zoom factor. 4
v-factor
Real number that specifies the vertical zoom factor. 4
recenter flag
0 or 1 depending on whether the recenter at crosshairs
option was selected in the set zoom factors input form.
0
{ list } An empty list, or a copy of the last PPAR.
Use the set zoom factors input form ( ZFACT ) to modify ZPAR.
ΣDAT
Σ DAT is a variable in the current directory that contains either the current statistical matrix or the name of the
variable containing this matrix. This matrix contains the data used by the Statistics applications.

HP 48GII Specifications

General

Battery type	CR2032
Type	Scientific
Form factor	Pocket

Weight and Dimensions

Weight	220 g
Dimensions (WxDxH)	184 x 87 x 23.5 mm

Summary

RPL Programming

Understanding Programs

Programs as objects, delimiters, and basic structure.

Entering and Executing Programs

Details on how to create, store, and run programs.

Using Conditional Structures

Covers IF, CASE, IFT, IFTE structures for program decision-making.

Input and Output Commands

Details commands like PROMPT, INPUT, INFORM, CHOOSE for user interaction.

RPL Programming Examples

Fibonacci Numbers

Demonstrates recursive and loop-based Fibonacci calculations.

Minimum and Maximum Array Elements

Details finding min/max elements using MNX and MNX2.

Applying a Program to an Array

Explains the APLY command for transforming array elements.

Full Command and Function Reference

How to Access Commands and Functions

Explains key presses and menu paths to access commands.

ABS (Absolute Value)

Details the absolute value function and its array behavior.

ACOS (Arc Cosine)

Explains the inverse cosine function, domain, and range.

Computer Algebra Commands

CAS Operations

Overview of CAS operations and their categorization by menu.

Algebra commands

Lists and describes commands for algebraic manipulation.

Calculus Commands

Covers derivation, integration, and limit commands.

Equation Reference

Columns and Beams (1)

Provides equations for structural mechanics.

Electricity (2)

Lists equations related to electrical circuits and laws.

Fluids (3)

Covers equations for fluid mechanics.

The Development Library

Introduction

Explains the purpose and usage of the development library.

Tools for Development

Details APEEK, PEEK, POKE, POKEARM commands.

MASD Compiler

Discusses syntax, modes, and directives for MASD.

Error and Status Messages

Messages Listed Alphabetically

Alphabetical list of error messages.

Messages Listed Numerically

Numerical list of error messages by hex code.

System Flags

System Flags (continued)

Description of various system flags.

System Flags (continued)

Continuation of system flags description.

Reserved Variables

Contents of the Reserved Variables

Explanation of key reserved variables.

PPAR

Details plotting parameters.

Technical Reference

Object Sizes

Lists object sizes in bytes.

Symbolic Integration Patterns

Provides a table of symbolic integration patterns.

Parallel Processing With Lists

General rules for parallel processing

Explains conditions for parallel list processing.

Group 4: ADD and +

Describes how ADD and + handle parallel list operations.

Keyboard Shortcuts

Press and Hold key combinations

Lists functions performed by key combinations.

Shifted softkeys

Explains shift key effects on menu labels.

The Menu-Number Table

-- menus 0-117 are semi-compatible with 48G menus --

Menu numbers and paths for built-in menus.

-- New Library 222 commands --

Details commands available in Library 222.