HP 48gx User Manual

Printing and Data Transfer: (@)(1/0)
The 1/0 application allows you to
print objects or to transfer data
between two HP 48s or between
the HP 48 and a computer.
Using External Programs: (@)( crARY)
The LIBRARY application helps
you manage and retrieve external
programs and other objects stored
on plug-in cards or in backup
memory.
Using Built-In Equations: (#8) 115)
The EQ LIB application allows
you to select from over 300
built-in equations and use them to Forces and Eneray
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Utility Environments
There are four special interactive environments that help you to
manage and organize your work and control the way your calculator
functions. You will use these environments independently and in
combination with the applications.
Editing Previously-Created Objects: @)(cDiT)
The EDIT environment is an
expanded version of the command
line and is used to edit objects
after they've been entered onto
the stack.
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2-14 Introducing the HP 48

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)

Summary

Start Here

Lesson 1: Getting Ready

Guides users through initial calculator setup, including turning it on/off and adjusting display contrast.

Arithmetic

Lesson 6: Doing Arithmetic

Teaches arithmetic operations using both stack and algebraic methods, including the EquationWriter.

Understanding and Using Memory

Lesson 12: Understanding Memory

Explains the HP 48's memory organization, including SYSRAM, variables, and directories.

Lesson 13: Creating (Naming) Variables

Guides users on how to create global variables by naming objects and storing them in user memory.

Solving Equations

Lesson 17: Solving for a Variable—Numerically

Teaches how to find numerical solutions for variables in equations using the SOLVE application.

Lesson 18: Solving for a Variable—Symbolically

Explains how to rearrange equations to isolate a specific variable symbolically.

Plotting Equations and Analyzing Graphs

Lesson 21: Plotting a Function

Guides users on entering functions and setting parameters for plotting graphs on the HP 48.

Calculus, Statistics and Advanced Mathematics

Lesson 29: Finding Derivatives

Teaches how to find both numerical and symbolic derivatives of functions.

Lesson 30: Finding Integrals

Demonstrates how to compute numerical and symbolic integrals with specified limits.

Lesson 31: Data and Statistics

Covers entering and summarizing data, calculating mean and standard deviation for datasets.

Lesson 32: Regression Analysis of Paired Data

If Things Go Wrong ...

Lesson 38: Error Messages

Lists common error messages and their meanings, helping users diagnose issues.

Lesson 39: Troubleshooting

Provides steps for undoing mistakes, system halts, and performing memory resets to resolve problems.