UC知道matlable 回归分析 急求程序
来源：百度知道 编辑：UC知道 时间：2024/06/08 23:51:55
我有三组数据如下：
x1=[0.0003276,0.0004059,0.0004857,0.0005974,0.0009253,0.0018505,0.0000922,0.0001289,0.0001657,0.0002063,0.0001903,0.0002497];
x2=[0.000122,0.0001486,0.0001768,0.0002339,0.0004232,0.0008464,0.0000509,0.0000757,0.0000866,0.0000906,0.0000916,0.0001301];
y=[0.000001626,0.000002014,0.000004575,0.000005857,0.000006330,0.00001726,0.000001643,0.000001715,0.000002938,0.000002422,0.00000188,0.00000308];
函数形式为：y=ax1+bx2
用matlable求解a，b的最优解?
请会用matlable，帮帮忙，写出具体的程序！
谢谢！
x1=[0.0003276,0.0004059,0.0004857,0.0005974,0.0009253,0.0018505,0.0000922,0.0001289,0.0001657,0.0002063,0.0001903,0.0002497];
x2=[0.000122,0.0001486,0.0001768,0.0002339,0.0004232,0.0008464,0.0000509,0.0000757,0.0000866,0.0000906,0.0000916,0.0001301];
y=[0.000001626,0.000002014,0.000004575,0.000005857,0.000006330,0.00001726,0.000001643,0.000001715,0.000002938,0.000002422,0.00000188,0.00000308];
函数形式为：y=ax1+bx2
用matlable求解a，b的最优解?
请会用matlable，帮帮忙，写出具体的程序！
谢谢！
x1=[1,1,1,1,1,1,1,1,1,1,1,1;
0.0003276,0.0004059,0.0004857,0.0005974,0.0009253,0.0018505,0.0000922,0.0001289,0.0001657,0.0002063,0.0001903,0.0002497;
0.000122,0.0001486,0.0001768,0.0002339,0.0004232,0.0008464,0.0000509,0.0000757,0.0000866,0.0000906,0.0000916,0.0001301];
y1=[0.000001626,0.000002014,0.000004575,0.000005857,0.000006330,0.00001726,0.000001643,0.000001715,0.000002938,0.000002422,0.00000188,0.00000308];
X=x1';Y=y1';
b=regress(Y,X)
运行结果：
b =
0.0000
-0.0004
0.0200
即a=-0.0004,b=0.0200
baidu上没有多少人帮你做这个的，要懂自己动手上网查，以后自己做才可以