Owner's manual
Table Of Contents
- Material covered
- The HP 49G documentation set
- Chapter 1
- Entering commands
- Keyboard entry
- Subject-specific menus
- Displaying system Flags
- Setting and clearing Flags
- User Flags
- Chapter 3
- Command line operations
- Activating the command line
- Positioning the cursor
- Helpful commands and sub-menus
- Selecting characters
- Copy, cut, and paste
- Editing the command Line
- Command Line information
- Chapter 4
- Using the stack
- Example stack calculations
- Chapter 5
- Matrices and linear algebra
- Matrix Writer operations
- Advanced matrix operations
- Creating special matrices
- Assembling matrices
- To assemble a matrix by rows From a series of vectors
- To assemble a matrix by columns From a series of vectors
- To assemble a matrix with a particular diagonal From a vector
- To assemble a matrix From a sequence oF elements
- To disassemble a matrix into its elements
- To disassemble a matrix into row vectors
- To disassemble a matrix into column vectors
- To extract the vector oF diagonals From a matrix
- To insert one or more new rows into a matrix
- To insert one or more new columns into an array
- To extract a particular row From an array
- To extract a particular column From an array
- Swapping rows and columns
- Extracting and replacing elements oF matrices
- More matrix arithmetic
- To change the sign of each element in a matrix
- To multiply a matrix and vector
- To divide an array by a square matrix
- To combine two real matrices into a complex matrix
- To split a complex matrix into two real matrices
- To conjugate each element of a complex matrix
- To extract the matrix of real parts from a complex matrix
- To extract the matrix of imaginary parts From a complex matrix
- Eigenvalues and eigenvectors
- To compute the eigenvalues For a square matrix
- To compute the eigenvalues and eigenvectors For a square matrix
- To compute the singular values oF a matrix
- To decompose or factor a matrix
- Overview of the Units application
- Unit objects
- Converting units
- Calculating with units
- Working with temperature units
- Chapter 7 Constants Library
- To view the constants library
- To copy a constant to the stack or history
- To include a constant in an algebraic expression
- Chapter 8 Number bases
- Entering and displaying binary integers
- To set the base
- To set the wordsize
- To recall the current wordsize
- To enter a binary integer
- To add, subtract, multiply, or divide two binary integers
- To find the negative of a binary integer
- To convert a binary integer to a diFFerent number base
- To convert a binary integer to a real number
- To convert a real number to a binary integer
- Using Boolean operators
- Manipulating bits and bytes
- List Processing
- Applying a Function or program to a List
- List Manipulations
- Chapter 10
- Advanced plotting options Labelling and relocating the axes
- Plotting programs
- Plotting range vs. display range
- To check the current size oF PICT
- To use computed values for plotting or display ranges
- Saving and Restoring Plots
- Chapter 11
- How memory is structured
- Accessing port contents
- Backup objects
- Using data in backup objects
- How the HP 49G manages memory
- To list a port’s contents, and find Free memory
- Chapter 12
- Date and time arithmetic Date and time Formats
- Date and time tools
- Calculating with dates
- Calculating with times
- Chapter 13 Customization
- Creating menus
- User mode
- Chapter 14
- Computer Algebra Commands
- Alphabetical command list
- 1 q
- Index
Chapter 4
The Stack
The HP 49G keeps a record of the objects you enter and the results of your
operations. In algebraic mode this record is called history; in RPN mode it
is called the stack.
Using the stack
Entries on the stack are niunbered (as in the
example at tire riglrt). Air entry on the stack is
referred to as being on a particular level. The
level is the number of the line on which the
entiy appears. In the example at the right, 58
is on level 4, 6 is on level 3, is on level
2, and so on.
RMi KVZ HEK R= 'K'
■ CHOHE?
__________
isiaBniiSiaBi
58
___
6
■J8745
93.514704726
If you are working in RPN mode, you will use the stack to perfonn
calculations. In doing so, you need to be aware of differences between the
way calculations are performed and displayed in RPN mode and in
algebraic mode, hr RPN mode:
® A command that requires arguments—that is, a command that needs
objects to act on—takes its arguments from the stack. Therefore, the
arguments must be present before you execute the command: one
argument per level and in the correct order. (There is one exception:
when the command takes only one argument, you can execute the
command with the argument on tire command line, not on the stack.)
• A command’s arguments are removed from the stack when the
command is executed. The argmrrents are replaced by the result of the
calculation.
In contrast, in algebraic mode you specify your arguments after you enter
the commaird, and the command and its arguments are retained in history
together with the result of the calculation.
For example, to find the cube of 52, you need to specify two arguments:
the nimrber (52) and the index (3). In algebraic mode, you enter:
52 (>^j3 (ENTER)
The Stack
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