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1、1、在飞机的机翼加工时，由于机翼尺寸很人，通常在图纸上只能标出部分关键点的数据.某型号飞机的机翼上缘轮廓线的部分数据如下。用插值法求兀每改变0.1时的y值，画出图形表示。X04.749.051938577695114133152171190y05.238.111.9716」517.116.3414.6312.166.697.033.990x=[04.749.051938577695114133152171190];y=[05.238.111.9716.1517.116•3414.6312.166.697.033.9
2、90]cx=0:0.1:190;Edicy=interpl(xzyzex,1spline1)；plot(x,y,1+1,ex,cyxy,1r：1)xlabel(1chang1),ylabel(1kuang1)ditor・C:UsersAdministratorDocumentsMA^LABhigh.mFileEditTextGoCellToolsDebugDesktopWindowHelp、cX:*8cl・i.o
3、+
4、弓i.ix熾疾Q1-x=[04.749.051938577695114133152171
5、190];
6、匚2一尸[05.238.111.9716.1517.116.3414.6312.166.697.033.990]:3-cx=0:0.1:190;4-cy=interpl仗，y,exJspline'):5-plot(x,y/+,ex,cy^x.y/r/)6-xlabelCchang),ylabelCkuang)[high.mx]hdl.mx1scriptLn6Col32OVR』2、己知观测数据点如表所示：兀00.10.20.30.40.50.60.70.80.91V-0.4471.9783.286.16
7、7.087.347.669.569.489.311.2分别川1次和3次多项式两数曲线拟合这些数据点，画出图形。x=0:0.1:1;y=[-0.4471.9783.286.167.087.347.669.569・489.32];A=polyfit(x,y,1)z=polyval(A,x)；plot(x,yJk+1,xzz,1r1)x=0:0.1:1;y=[-0.4471.9783.286.167.087.347.669・569.489・311.2];A=polyfit(x,y,3)z=polyval(A,x)；plo
8、t(x,y,1k+1,x,z,1r1)3、教材P327习题1cK=0.0728cKA=0.0731T=[68688787106106140140];P=le+03*[9798113.3219.007813・3559・791814.27799.656312.463];K=[0.08480.08970.07620.08070.06960.07530.06110.0651];cT=68:0.5:140;cP=le+03*9.0078:0.05：le+03*14.277；cK=griddata(T/P/K/99/le+03
9、*10<3/1cubic1)cKA=griddata(TzP,K,99,le+03*10.3,1linear')4、教材P327习题4,初始值为Vo=O,T=0.05X=5.55773.50026.14906.66167.4913&11478.58328.93539.39879.66046.14906.66167.49138.11478.5832&93539.39879.6604functionf=dianya(xzt)f=10-(10-x(1))*exp(-t/x(2))t=[0.51234579);V=[6.3
10、66.487.268.228.668.999.439.63];x0=[0.20.05];x=lsqcurvefit(1dianya1,xO,t,V)f=dianya(x,t)
