HP 15c Collector's Edition User Manual

Section 6: Programming Basics 71
The program to calculate this information uses these formulas and data:
base area = πr
2
.
volume = base area × height = πr
2
h.
surface area = 2 base areas + side area = 2πr
2
+ 2πrh.
Radius, r Height, h Base Area Volume Surface Area
2.5 cm 8.0 cm ? ? ?
4.0 10.5 ? ? ?
4.5 4.0 ? ? ?
TOTALS
? ? ?
Method:
1. Enter an r value into the calculator and save it for other
calculations. Calculate the base area (πr
2
), store it for later use, and
add the base area to a register which will hold the sum of all base
areas.
2. Enter h and calculate the volume (πr
2
h). Add it to a register to hold
the sum of all volumes.
3. Recall r. Divide the volume by r and multiply by 2 to yield the side
area. Recall the base area, multiply by 2, and add to the side area to
yield the surface areas. Sum the surface areas in a register.
Do not enter the actual data while writing the program—just provide for
their entry. These values will vary and so will be entered before and/or
during each program run.
Key in the following program to solve the above problem. The display
shows line numbers and keycodes (the row and column location of a key),
which will be explained under Further Information.
Keystrokes Display
| ¥
000-
Sets calculator to Program
mode (PRGM displayed).
´ CLEAR M
000-
Clears program memory.
Starts at line 000.

HP 15c Collector's Edition Specifications

General

Model	HP 15c Collector's Edition
Category	Calculator
Type	Scientific
Power Source	Battery
Manufacturer	HP
Display	LCD
Functions	complex numbers, matrix operations

Summary

Introduction

This Handbook

Outlines the structure of the manual, detailing its parts and how to use it for learning.

The HP Community

Discusses user groups and websites for HP calculator enthusiasts and information sharing.

Part I: HP 15c Fundamentals

Section 1: Getting Started

Covers basic operations like powering on, keyboard layout, and primary/alternate functions.

Section 2: Numeric Functions

Explains essential numeric operations including logs, trig, powers, and conversions.

Section 3: The Automatic Memory Stack, LAST X, and Data Storage

Details the RPN stack, LAST X register, and data storage operations.

Part II: HP 15c Programming

Section 6: Programming Basics

Introduces core programming concepts: creating, loading, running programs, and memory.

Section 8: Program Branching and Controls

Covers controlling program flow using branching, loops, and conditional tests.

Part III: HP 15c Advanced Functions

Section 11: Calculating With Complex Numbers

Covers entering, manipulating, and performing calculations with complex numbers.

Section 12: Calculating With Matrices

Explains matrix operations, including dimensioning, element access, and calculations.

Section 13: Finding the Roots of an Equation

Details using the SOLVE function for numerical root finding and equation solving.

Section 14: Numerical Integration

Explains how to perform numerical integration using the ∫f(x)dx key and subroutines.

Appendix A: Error Conditions

Error 8: No Root

Explains the error when the SOLVE function cannot find a root.

Error 0: Improper Mathematics Operation

Lists and explains errors related to mathematical operations and illegal arguments.

Appendix D: A Detailed Look at SOLVE

How SOLVE Works

Explains the numerical technique and logic behind the SOLVE algorithm.

Finding Several Roots

Discusses methods for finding multiple roots of an equation using the SOLVE function.