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1、matlabn MATLAB n matlabn MATLAB n MATLAB n§1.1 MATLABn Matrix Laboratoryn20 70 Clever Molor Linpack Eispack n 1984 MathWorksn 1992 Windows 4.0 n2000 6.0n 2004 7.0 nMatlab R2009bmatlab Maple Lindo Mathematica MathCAD MATLAB SAS§1.2 MATLABn n nnn n Notebook word matlab n nn>> A=1,2,3;4

2、,5,6;7,8,9A =1 2 34 5 67 8 9>> B=rand(3,3B =0.9501 0.4860 0.45650.2311 0.8913 0.01850.6068 0.7621 0.8214>> C1=A*B C1 =3.2329 4.5549 2.95778.5973 10.9730 6.846813.9616 17.3911 10.7360>> D1=A/BD1 =-1.7100 -0.7740 4.6200-0.4883 -0.6135 7.58970.7333 -0.4530 10.5595li k u ww .d o c u -t

3、r a c k .c mC c t ob w w .d oc u -t r a c k .c om,l=size(A;l,n=size(B;c=zeros(m,n;for i=1:m for j=1:n for k=1:lc(i,j=c(i,j+A(i,k*B(k,j;end end end=×××=lk kj ik ij n l l m n m b a c B A C 1( C >>x=0:0.1:2*pi;>>plot(x,sin(x,r, x,cos(x,b§1.3 MATLABnn n nn n nn Matlabntoo

4、lbox matlab§1.4 MATLABn setup.exe, n nn typical custom n n nli k u ww .d o c u -tr a c k .c mC c t ob w w .d oc u -t r a c k .c otypical customn“Typical” MATLAB n “Custom”“Select products to install”n Windows“ ”n MATLAB matlab.exe nnFile Exit Matlab n Exit Quit n MATLAB “ ”§1.5matlabMATLAB

5、n : n Command Window n Workspacen Command History n Current Directory n StartFile Edit Debug Desktop Window Help 6nFilenSet Path n Import Datan Save Workspace As n Preferenceli k u ww .d o c u -tr a c k .c mC c t ob w w .d oc u -t r a c k .c onEdit Cut Copy Delete Find Clear Command Window Clear Com

6、mand History Clear WorkspacenDesktop(Desktop Layout | DefaultnHelpnDebug nWindowClose all documents M-file Figure Model GUIn Run(F5n step(F10n Clear breakpointsMATLABn>> MATLAB Enter MATLAB n ;n n ans answern workspace;lif end for MATLAB l l l lformat(format short g MATLAB “ 64 16 ”li k u ww .

7、d o c u -tr a c k .c mC c t ob w w .d oc u -t r a c k .c oformat(short 1000format long 15 format long e 15 format short eformat short g format short format short eformat rat format hex format compact format loosenFile|PreferenceMATLABn format MATLABMATLABarray editorworkspace MATLABwho whos>>w

8、hos Name Size Bytes Class ans 1×1 8 double array t 1×201 1608 double array >>who Your variables are:ans tWho whosCurrent Directory MATLABli k u ww .d o c u -tr a c k .c mC c t ob w w .d oc u -t r a c k .c oPD H F-XC A N GE PD H F-XC A N GE O W ! N y bu to k lic C m C lic k to bu y N

9、.c O W ! w .d o w o .d o c u-tr a c k c u-tr a c k .c MATLAB n n n n " M M MATLAB " cd f:mydir f:dir MATLAB MATLAB n p p pathtool File: Set Path editpath n path path(path,' f:my_dir' M Command History workspace , M n / Editor .m Open File|New M-File edit Edit Clear Command History

10、n n o m w w w w PD H F-XC A N GE PD H F-XC A N GE O W ! N y bu to k lic C m C lic k to bu y N .c O W ! w .d o w o .d o c u-tr a c k c u-tr a c k .c n n File|New Figure figure Open file plot F5 Debug|Run .m n M §1.6 MATLAB MATLAB n n n n n Mathworks n HTML helpdoclookfor demo PDF n n n helpbowse

11、r helpdesk Window | Help Help | MATLAB Help ? o m w w w w PD H F-XC A N GE PD H F-XC A N GE O W ! N y bu to k lic C m C lic k to bu y N .c O W ! w .d o w o .d o c u-tr a c k c u-tr a c k .c n n Content Index Search: n n Demos demos matlab demos help/doc/lookfor n n help n doc help help help n doc HTML " " n n help doc lookfor help doc lookfor n n DEMO HTML M GUI lookfor docsearch M n n >>demos demos Help Demos " search " n o m w w w w PD H F-XC A N GE PD H F-XC A N GE O W ! N y bu to k lic C m C

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