Matlab2010经典超强教程带目录

1MATLABMATLABNachtigal,M.N.,Reddy,S.C.,Trefethen,L.N.(1990)CopperMountainCopperMountainCO,1-5,199041.1MATLABMATLABMATLABMATLABMATLABMATLABMATLABMATLABFORTRAN25MATLABMATLAB••••••MATLABMATLAB(MATrixLABoratory)1.2MATLABMATLABMATLABMATLABMATLABMATLABMATLABMATLABcommand(parl,par2)par1par21.1MATLABMATLAB(a)MATLAB0x6sin(2x)sinx2sin2xx=linspace(0,6);%xy1=sin(2*x);%y1xxsin(2x)y2=sin(x.^2);%y2sin(x.^2)y3=(sin(x)).^2;%y3(sin(x)).^2plot(x,y1)y1y1xplot13sin(2x)sin(x2)sin2x(1-1)1-1(b)MATLAB1-2f(x,y)=cos(x)sin(y)surfshadinginterpmeshwaterfallcontour131-22MATLAB5surfshadinginterpmeshmeshcontour(c)MATLABx-y1-31-31.2MATLABfzerofminfunc(2.9)func.mMMmatlabfuncMATLABxiszero=func(0)xiszero=1MATLABxex2ex2sinx3=0xsolv=fzero(‘func’,3)xsolv=1.2194231x1.51-41-41x1.5xex2ex2sinx3xex2-ex2-sinx31MATLAB3x0.51mpoint=fmin(‘func’,0.5,1)mpoint=0.8954MATLAB10111.3(a)MATLABAbAx=bx=A\b(b)(a)AEigenVectorsAEigenValuesAMATLAB347891.4(a)xyx-y4MATLAB5x-y9MATLABp1=polyfit(x,y,1)%p1=Alinc=polyval(p1,x)%linc=Axp1plot(x,linc,x,y,‘x)%x1-5()7p7=polyfit(x,y,7);%p7=A7xx=1:0.25:8;%xx=polc=polyval(p7,xx);%polc=Axxp7plot=(xx,polc,x,y,x)%x1-5()1-5x-y917(b)MATLAB(xiyi)x˜iMATLAB(a)1-6piecewise()()1MATLAB5x˜i=(11.11.21.37.98)1-6x101.5MATLAB1-7921112773232351111x61-71.6MATLABFFTMATLAB015sin(x)+2sin(5x):x=linspace(0,2*pi,64);signal=5*sin(x)+2*sin(5*x)+randn(x);6MATLAB52001-8()transf=fft(signal);filttransf(1:9)=transf(1:9);filttransf(56:64)=transf(56:64);1-8()1-9()filtsig=ifft(filttransf);1-9()10.5MATLABC1.7MATLAB(x(t),y(t))(X(t),Y(t))(5040)wat1-101MATLAB71-81-9α(t)=(X(t)-x(t))2+(Y(t)-y(t))2ωαωα1-1011.2MATLAB1.8MATLABPDE(theFiniteElementMethod)u=sin(2y+/2)cos(2x+/2)1-11u=0PDE1-121.9MATLABMATLABMATLAB.mMMMATLAB(a)n=123n8MATLAB51-11PDEFEM1-12PDEPDEfunctionp=factorial(nn)nnMfactorial.mfourfactorial=factorial(4)fourfactorial=24(b)[e-mail]=world(Size,Density,nrCreate,nrSurvive)%WORLD%%Size%Density01%nrCreate%nrSurvive@worldww=world(20,0.6,[245],[367]);w=year(w)10101-13MATLAB121.10MATLAB14.314.41MATLAB91-1310w1-14MATLAB1.3MATLABMATLABMATLABMATLABhelpMATLABMATLAB5HTMLhelpdeskNetscapeNavigatorMicrosoftInternetExplorerMathWorksMATLAB10MATLAB52MATLABMATLABMATLABAMATLAB2.1MATLABMATLABWindowsMacintoshUNIXmatlabMATLABmatlabrc.mstartup.mMATLABconstantsmatlabrc.mstartup.m2.20(c)MATLABquitexit1exitquitMATLAB2.8Ctrl-cMATLABMATLABWindowsMacintoshquitMATLAB2Ctrl_pCtrl_nCtrl_fCtrl_bDelete,BackspaceCtrl_lCtrl_Ctrl_rCtrl_Ctrl_aHomeCtrl_eCtrl_kcedithelpcedit2.2MATLABMATLABmnmn2mnp2.1231(123)2aijaijij2.1a21=4(4)5.511MATLABvariable=expressionexpressionexpressionMATLABans(answer)[](helpparen);’MATLABhelppunctMATLAB5.1.3variable(rowIndex,columnIndex)2.312MATLAB52.2(a)x=7x=7(b)7ans=7(c)23A=[123456]A=123456(d)A=[123456](e)rowvec=[1.23.24];colvec=[2.7;3.4;9.2];(f)colvecMATLABcolvec=2.70003.40009.2000(g)B(11)=1B(12)=7B(21)=5B(22)=0B=17502-1332reshape(37)2-22MATLAB132.3(a)ABCC(1)=AC(2)=B(b)CC(111)=100MATLAB2.4(a)x=7y=4.6735567;z=x^y;(b)MATLABsizelength14MATLAB52-13322-2332Amnpxm1()1n()MATLAB3size(A)A[mnp]=Amnsize(A)size(Adim)dimAsize(x)xx1m21x112nlength(x)xnxmlength(A)mnpndimsAlength(size(A))sub2ind(sizemn)size(mn)[mn]=ind2subind(mn)(sizeind)sizedimemsionsizelength2.5(a)thesize1=size(A)A2.2(c)thesize1=23thesize2=size(C)C2.3thesize2=233(b)2-22MATLAB152.3MATLABMATLAB19AZaz_clearMATLABaAMATLABabs(A)AABS(A)MATLAB4double64char16sparsesparse4+(*16)unit88512MATLABrepmat(4.1)5iscell(x)x105.5isfield(x)x1012.5isfinite(x)xx10islogical(x)x10isnumeric(x)x10isstr(x)x105.1isstruct(x)x1012.5isobject(x)x1012.6logical(x)2.616MATLAB5repmatxroundrepmat4.1MATLAB6MATLABanseps1epsepsepsclearrealmaxrealminpiπ3.141592653589793eps16inf1/0MATLABinfNaNNotaNumberinf/inf2MATLAB17ijijclearnargin12.3nargout12.37whoWhoglobalwho12.3whoa*awhoswhowhosglobalwhos12.3exist(namestr)namestr51)namestr2)namestrM(2.9)3)namestrMEX(15)4)namestrSIMULINK5)namestrMATLABinmemMMEXworkspacewhosclearhelpworkspaceUNIXclear8cleareps111clearclearnamenameclearname1name2name1name2cleara*aclearvaluevaluehelpclear-118MATLAB5packMATLABpack•pack.tmp••pack.tmp•pack.tmppackfilenamefilenamehelpclearhelpmemoryhelppackMATLABMATLABclearnameclear(’name)whoglobalwho(‘global’)axisspuareaxis(‘square’)13.3/MATLAB52.4MATLAB3.141.23E61.23106MATLAB1)^2)*/()\3)+1()3.32/50.45\22.7a/b+cMATLABa/(b+c)a\(b+c)MATLABMATLABb+caab+cab+c2MATLAB19MATLAB93.69abs(x)x|x|sign(x)x110sqrt(x)xpow2(x,f)x2ffxexp(x)xexlog(x)xlnxlog10(x)x10log10xlog2(x)x2log2xsin(x)xxcos(x)xxtan(x)xxcot(x)x1/(tanx)xasin(x)sin1xacos(x)cos1xatan(x)tan1xatan2(x,y)(x/y)[]acot(x)x=(1/x)sec(x)x1/(cosx)csc(x)x1/(sinx)asec(x)sec1x=arccos(1/x)acsc(x)csc1x=arcsin(1/x)sinh(x)xcosh(x)xtanh(x)xcoth(x)x1/(tanhx)asinh(x)sinh1x=lnacosh(x)cosh1x=lnatanh(x)tanh1x=0.5ln((1+x)/(1x))acoth(x)coth1x=0.5ln((x+1)/(x1))sech(x)x1/(coshx)csch(x)x1/(sinhx)asech(x)sech1x=lnacsch(x)csch1x=ln((1+1+x2)/x)((1+1-x2)/x)(x+1-x2)(x+1+x2)x20MATLAB52.8(a)sinepi=sin(pi)sinepi=1.22466e160piπMATLAB10x10round(x)xxfix(x)0xxxfloor(x)xceil(x)xrem(x,y)x/ygcd(x,y)xy[g,c,d]=gcd(xy)gcdg=xc+ydlcm(xy)xy[tn]=rat(x)t/nxtn106rats(5.1.2)[t