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mathomatic - a computer algebra system
-abcdehqrtuvwx ] [ -s level:time ] [ -m
number ] [ input_files or input ]
Mathomatic is a general-purpose
computer algebra system (CAS) that can symbolically solve,
simplify, combine, and compare algebraic equations, perform
standard, complex number, modular, and polynomial arithmetic,
etc. It does some calculus and handles all elementary algebra,
except logarithms. Trigonometry and function expansion are
supported in a separate program called rmath(1) . Plotting expressions with
gnuplot is also supported.
mathomatic is the main Mathomatic application that does
interactive symbolic-numeric mathematics through a simple
command-line interface. Readline or editline support is usually
compiled into this application, making it easy to edit input and
recall previous input with the cursor keys. The numeric
arithmetic is double precision floating point with about 14
decimal digits accuracy. Many results will be exact, because
symbolic math is an exact math, and because multiple floating
point numbers can be combined for a single mathematical value;
for example: 2^(1/3), which is the cube root of 2
any options, text files may be specified on the shell command
line that will be automatically read in with the read command,
unless the -e option is specified.
- Enable alternative colors. Ansi color mode will be enabled
in MS-Windows, if this option is specified and color mode is
- Enable bold colors. Color mode will be turned on and colors
will be brighter if this option is specified. Same as the "set
bold color" command.
- Toggle color mode. This mode outputs ANSI terminal escape
sequences to make each level of parentheses a different color,
for easier reading. Requires a terminal emulator that supports
ANSI color escape sequences. If the colors are too hard to see,
use the -b option to increase the color brightness.
- Set demo mode. Currently this mode only bypasses loading
the startup (rc) file, and ignores the pause command. It also
allows using the calculate command without prompting for the
values of any of the variables.
- Process mathematical expressions and Mathomatic commands
instead of input files on the shell command line, and then
quit. Unquoted space characters are the line separators on the
Mathomatic input that follows this option. Works similar to
entering it into the Mathomatic main prompt, except the
autoselect option is turned off. Useful for quick command-line
calculations. The startup messages are not displayed with this
option. Follow this option with "--" so that expressions can
start with a minus sign (-).
- Display a brief help message listing all of these options
and then exit.
- -m number
- Change the memory size of equation spaces. It is followed
by a decimal, floating point number which is a multiplier of
the default equation space size. This allows larger equation
spaces so that manipulating extremely large expressions will
succeed without getting the "Expression too large" error.
Specifying a number higher than 100 may make Mathomatic
- Set quiet mode. The startup messages and prompts are not
displayed. This is useful when piping or redirecting input into
Mathomatic, because the input won’t be displayed, so
prompt output should be turned off. This option does the same
thing as the "set no prompt" command.
- Disable readline or editline input processing. Readline,
and the editline drop-in replacement library, allow line input
editing using the cursor keys, and output terminal control
codes, all of which can be turned off with this option.
- -s level:time
- Set the enforced security level for the user’s
Mathomatic session. Level 0 is the default with no security.
Level 1 disallows shelling out (forking). Level 2 disallows
shelling out and writing files. Level 3 disallows shelling out
and reading/writing files. Level 4 is the highest security
level and is the same as compiling with the -DSECURE option.
This run-time option was created for use on open public
servers. Specifying a colon, then a time in seconds, will time
limit the application for that session.
- Set test mode. Used when testing and comparing output.
Bypasses loading startup (rc) file, turns off color mode and
readline, sets wide output mode, ignores the pause command,
etc. It also allows using the calculate command without
prompting for the values of any of the variables.
- Guarantee that standard output and standard error output
are unbuffered. Also echoes all line input if not in quiet mode
( -q option ). Useful when piping.
- Display program name and version number, then exit
- Set wide output mode for an unlimited width output device
like the "set wide" command does. Sets infinite screen columns
and rows so that 2D (two-dimensional) expression output will
always succeed and not be downgraded to 1D output when it
doesn’t fit in the display area. Use when redirecting
output or with a terminal emulator that doesn’t wrap
lines. This mode only affects 2D output.
- Enable HTML output mode (which is also valid XHTML). This
makes Mathomatic output suitable for inclusion in a web page.
Color and bold mode affect this mode, allowing HTML color
output. Wide output mode is also set by this option, meaning
expressions will always be displayed in 2D.
Mathomatic is best run from within a terminal emulator. It
uses console line input and output for the user interface. First
you type in your mathematical equations in standard algebraic
notation, then you can solve them by typing in the variable name
at the prompt, or perform operations on them with simple English
commands. Type "help" or "?" for the help command, "help
examples" to get started. If the command name is longer than 4
letters, you only need to type in the first 4 letters. Most
commands operate on the current equation by default.
A command preceded by an exclamation point (such as "!ls") is
taken to be a shell command and is passed unchanged to the shell
(/bin/sh). "!" by itself invokes the default shell, which is
specified in the SHELL environment variable. "!" is also the
Complete documentation is available in HTML and PDF formats;
see the local documentation directory or online at "http://mathomatic.org/math/doc/
" for the latest Mathomatic documentation.
- The EDITOR environment variable specifies which text editor
to use for the edit command.
Mathomatic has been written by George
Gesslein II (email@example.com), with help from the
The command to take the limit of an expression is
partially functional and experimental. All else should work
perfectly; if not, please report it as a bug to the author or on
the Launchpad website: "https://launchpad.net/mathomatic
primorial(1) , matho-mult(1) , matho-sum(1) , matho-pascal(1) , matho-sumsq(1)
- Optional startup file containing Mathomatic set command
options. It should be a text file with one or more set options
per line. For example, the line "no color" will make Mathomatic
default to non-color mode, which is useful if you aren’t
using a supported color device.
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