x1=[456]'x1=456>>x2=[123]'x2=123>>x1.*x2ans=41018x1*x2???Errorusing==>mtimesInnermatrixdimensions（维数）mustagree.维数必须相同y=[8885889192939395969897969899100102]';>>x=[143145146147149150153154155156157158159160162164]';>>y=[8885889192939395969897969899100102]';>>X=[1x]???Errorusing==>horzcatAllmatrices（矩阵）onarowinthebracketedexpressionmusthavethesamenumberofrows.所有矩阵必须有相同的行数X=[ones(3,1)]X=111x=[143145146147149150153154155156157158159160162164]';>>X=[ones(16,1)x];>>Y=[8885889192939395969897969899100102]';>>[b,bint,r,rint,stats]=regress(Y,X,0.05)b=-16.07300.7194bint=-33.70711.56120.60470.8340stats=0.9282180.95310.00001.7437r=1.2056-3.2331-0.95241.32820.88951.1702-0.98790.29270.57341.85400.1347-1.5847-0.3040-0.0234-0.46210.0992rint=-1.24073.6520-5.0622-1.4040-3.58941.6845-1.28953.9459-1.85193.6309-1.55523.8955-3.77131.7955-2.54733.1328-2.24713.3939-0.75404.4621-2.68142.9508-4.21881.0494-3.07102.4630-2.76612.7193-3.11332.1892-2.46402.6624rcoplot(r,rint)（残差分析，做残差图）如下：z=16.073+0.7194*xz=118.9472120.3860121.1054121.8248123.2636123.9830126.1412126.8606127.5800128.2994129.0188129.7382130.4576131.1770132.6158134.0546plot(x.Y.'k+'.x.z.'r')X=-2:8X=-2-1012345678>>Y=4*X.^2Y=16404163664100144196256plot(X,Y,'R')