数学建模

本帖最后由 lilylu 于 2015-9-12 18:19 编辑

sinh=sina*0.1224+cosa*0.9925*cosz;
cosA=(sinh*sina-0.1224)./cosh*cosa;
y=x*tan(A-pi/2);
x=[1.0365,1.0699,1.1038,1.1383,1.1732,1.2087,1.2448,1.2815,1.3189,...
    1.3568,1.3955,1.4349,1.4751,1.5160,1.5577,1.6033,1.6438,1.6882,...
    1.7337,1.7801,1.8277];
y=[0.4973,0.5029,0.5085,0.5142,0.5198,0.5255,0.5311,0.5368,0.5426,...
    0.5483,0.5541,0.5598,0.5657,0.5715,0.5774,0.5883,0.5892,0.5952,...
    0.6013,0.6074,0.6135];
z=[17,17.75,18.5,19.25,20,20.75,21.5,22.25,23,23.75,24.5,25.25,...
26,26.75,27.5,28.25,29,29.75,30.5,31.25,32];
根据前三个公式，用多元拟合拟合出a的值，跪谢各位大神，真的很重要，注：z是度数，还没有换成弧度哦