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MATLAB ® 7
Getting Started Guide
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How to Contact The MathWorks
www.mathworks.c om Web
comp.soft-sys.matlab Newsgroup
www.mathworks.com/contact_TS.html Technical Support
suggest@mathworks.com
Product enhancement suggestions
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Order status, license renewals, passcodes
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Sales, pricing, and general information
508-647-7000 (Phone)
508-647-7001 (Fax)
The MathWorks, Inc.
3 Apple Hill Drive
Natick, MA 01760-2098
For contact information about worldwide offices, see the MathWorks Web site.
MATLAB ® Getting Started Guide
© COPYRIGHT 1984–2009 by The MathWorks, Inc.
The software described in this document is furnished under a license agreement. The software may be used
or copied only under the terms of the license agreement. No part of this manual may be photocopied or
reproduced in any form without prior written consent from The MathWorks, Inc.
FEDERAL ACQUISITION: This provision applies to all acquisitions of the Program and Documentation
by, for, or through the federal government of the United States. By accepting delivery of the Program
or Documentation, the government hereby agrees that this software or documentation qualifies as
commercial computer software or commercial computer software documentation as such terms are used
or defined in FAR 12.212, DFARS Part 227.72, and DFARS 252.227-7014. Accordingly, the terms and
conditions of this Agreement and only those rights specified in this Agreement, shall pertain to and govern
the use, modification, reproduction, release, performance, display, and disclosure of the Program and
Documentation by the federal government (or other entity acquiring for or through the federal government)
and shall supersede any conflicting contractual terms or conditions. If this License fails to meet the
government’s needs or is inconsistent in any respect with federal procurement law, the government agrees
to return the Program and Documentation, unused, to The MathWorks, Inc.
Trademarks
MATLAB and Simulink are registered trademarks of The MathWorks, Inc. See
www.mathworks.com/trademarks for a list of additional trademarks. Other product or brand
names may be trademarks or registered trademarks of their respective holders.
Patents
The MathWorks products are protected by one or more U.S. patents. Please see
www.mathworks.com/patents for more information.
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Revision History
December 1996 First printing For MATLAB 5
May 1997 Second printing For MATLAB 5.1
September 1998 Third printing For MATLAB 5.3
September 2000 Fourth printing Revised for MATLAB 6 (Release 12)
June 2001 Online only Revised for MATLAB 6.1 (Release 12.1)
July 2002 Online only Revised for MATLAB 6.5 (Release 13)
August 2002 Fifth printing Revised for MATLAB 6.5
June 2004 Sixth printing Revised for MATLAB 7.0 (Release 14)
October 2004 Online only Revised for MATLAB 7.0.1 (Release 14SP1)
March 2005 Online only Revised for MATLAB 7.0.4 (Release 14SP2)
June 2005 Seventh printing Minor revision for MATLAB 7.0.4 (Release 14SP2)
September 2005 Online only Minor revision for MATLAB 7.1 (Release 14SP3)
March 2006 Online only Minor revision for MATLAB 7.2 (Release 2006a)
September 2006 Eighth printing Minor revision for MATLAB 7.3 (Release 2006b)
March 2007 Ninth printing Minor revision for MATLAB 7.4 (Release 2007a)
September 2007 Tenth printing Minor revision for MATLAB 7.5 (Release 2007b)
March 2008 Eleventh printing Minor revision for MATLAB 7.6 (Release 2008a)
October 2008 Twelfth printing Minor revision for MATLAB 7.7 (Release 2008b)
March 2009 Thirteenth printing Minor revision for MATLAB 7.8 (Release 2009a)
Contents
Introduction
1 Product Overview ................................. 1-2
Overview of the MATLAB Environment ............... 1-2
The MATLAB System .............................. 1-3
Documentation .................................... 1-5
Starting and Quitting the MATLAB Program ......... 1-7
Starting a MATLAB Session ........................ 1-7
Quitting the MATLAB Program ...................... 1-9
Matrices and Arrays
2 Matrices and Magic Squares ........................ 2-2
About Matrices ................................... 2-2
Entering Matrices ................................. 2-4
sum, transpose, and diag ........................... 2-5
Subscripts ....................................... 2-7
The Colon Operator ................................ 2-8
The magic Function ................................ 2-9
Expressions ....................................... 2-11
Variables ........................................ 2-11
Numbers ........................................ 2-12
Operators ........................................ 2-13
Functions ........................................ 2-13
Examples of Expressions ........................... 2-15
Working with Matrices ............................. 2-16
Generating Matrices ............................... 2-16
The load Function ................................. 2-17
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