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Matlab基础内容介绍.ppt
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Lect 18 P. 1
Introduction to MATLAB
Lect 18 P. 2Winter Quarter
MATLAB
• MATLAB is a program for doing numerical
computation. It was originally designed for solving
linear algebra type problems using matrices. It’s name
is derived from MATrix LABoratory.
• MATLAB has since been expanded and now has built-
in functions for solving problems requiring data
analysis, signal processing, optimization, and several
other types of scientific computations. It also
contains functions for 2-D and 3-D graphics and
animation.
Lect 18 P. 3Winter Quarter
MATLAB
• The MATLAB environment is command oriented
somewhat like UNIX. A prompt appears on the screen
and a MATLAB statement can be entered. When the
<ENTER> key is pressed, the statement is executed,
and another prompt appears.
• If a statement is terminated with a semicolon ( ; ), no
results will be displayed. Otherwise results will
appear before the next prompt.
• The following slide is the text from a MATLAB screen.
Lect 18 P. 4Winter Quarter
MATLAB
To get started, type one of these commands: helpwin,
helpdesk, or demo
EDU» a=5;
EDU» b=a/2
b =
2.5000
EDU»
Lect 18 P. 5Winter Quarter
MATLAB Variable Names
• Variable names ARE case sensitive
• Variable names can contain up to 63 characters (as of
MATLAB 6.5 and newer)
• Variable names must start with a letter followed by
letters, digits, and underscores.
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