HP 15c Collector's Edition User Manual

Function Summary and Index 275
< Designates the
matrix into which the
result of certain matrix
operations is placed
(page 148).
U User mode. Row
and column numbers in
R
0
and R
1
are
automatically
incremented each time
O or l {A to
E, %} is pressed
(page 144).
O and l {A to
E, %} Stores or
recalls matrix elements
using the row and
column numbers in R
0
and R
1
(pages 144, 146).
O | and l |
{A to E, %} Stores
or recalls matrix
elements using the row
and column numbers in
the Y- and X-registers
(page 146).
O and l
> {A to E}
Stores or recalls matrices
for the specified matrix
(pages 142, 147).
O and l
< Stores or
recalls descriptor of the
result matrix (page 148).
l m {A through
E, V} Recalls the
dimensions of the given
matrix into the Y- (row)
and X- (column) registers
(page 142).
⁄ Inverts the matrix
whose descriptor is
displayed and places the
result in the specified
result matrix. The
descriptor of the result
matrix is then displayed
(page 150).
+, -, * Adds,
subtracts, or multiplies
the corresponding
elements of two matrices
or of one matrix and a
scalar. Stores in result
matrix (pages 152–155).
÷ For two matrices,
multiplies inverse of
matrix in X by matrix in Y.
For only one matrix: if
matrix in Y, divides all
elements of matrix by
scalar in X; if matrix in X,
multiplies each element
of inverse of matrix by
the scalar in Y. Stores in
result matrix (pages
152–155).
” changes sign of all
elements in matrix
specified in X-register
(page 150).
> {0 through 9}
Matrix operations.
> 0 Dimensions
all matrices to 0 × 0
(page 143).
> 1 Sets row
and column numbers in
R
0
and R
1
to 1
(page 143).
> 2 Complex
transform: Z
P
to Z
(page 164).
> 3 Inverse
complex transform. Z to
Z
P
(page 164).
> 4 Transpose X
to X
T
(page 150).
> 5 Transpose
multiply: Y and X to Y
T
X
(page 154).
> 6 Calculates
residuals in result matrix
(page 159).
> 7 Calculates
row norm of matrix
specified in X-register
(page 150).

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.