4.MATLAB 插值方法+拟合方法+逐步优化方法（习题）

 x=1200:400:4000;

    
 y=1200:400:3600;
    
 z=[1130  1250  1280  1230  1040   900   500   700;
    
    1320  1450  1420  1400  1300   700   900   850;
    
 1390  1500  1500  1400   900  1100  1060   950;
    
 1500    1200  1100  1350  1450  1200  1150  1010;
    
 1500    1200  1100  1550  1600  1550  1380  1070;
    
 1500    1550  1600  1550  1600  1600  1600  1550;
    
 1480    1500  1550