HP 15c Collector's Edition

8 Contents
Part III: HP 15c Advanced Functions ............................. 119
Section 11: Calculating With Complex Numbers .......................... 120
The Complex Stack and Complex Mode ....................................... 120
Creating the Complex Stack ...................................................... 120
Deactivating Complex Mode ...................................................... 121
Complex Numbers and the Stack ................................................. 121
Entering Complex Numbers ...................................................... 121
Stack Lift in Complex Mode ....................................................... 124
Manipulating the Real and Imaginary Stacks ........................... 124
Changing Signs .......................................................................... 124
Clearing a Complex Number ...................................................... 125
Entering a Real Number ............................................................ 128
Entering a Pure Imaginary Number ........................................... 129
Storing and Recalling Complex Numbers ................................. 130
Operations With Complex Numbers ............................................. 130
One-Number Functions ............................................................. 131
Two-Number Functions ............................................................. 131
Stack Manipulation Functions ................................................... 131
Conditional Tests ....................................................................... 132
Complex Results from Real Numbers ....................................... 133
Polar and Rectangular Coordinate Conversions .......................... 133
Problems ....................................................................................... 135
For Further Information ................................................................ 137
Section 12: Calculating With Matrices .......................................... 138
Matrix Dimensions ........................................................................ 140
Dimensioning a Matrix ............................................................... 141
Displaying Matrix Dimensions ................................................... 142
Changing Matrix Dimensions ..................................................... 142
Storing and Recalling Matrix Elements ........................................ 143
Storing and Recalling All Elements in Order ............................. 143
Checking and Changing Matrix Elements Individually .............. 145
Storing a Number in All Elements of a Matrix ........................... 147
Matrix Operations ......................................................................... 147
Matrix Descriptors ..................................................................... 147
The Result Matrix ...................................................................... 148
Copying a Matrix ........................................................................ 149
One-Matrix Operations .............................................................. 149