y=[6256,6756.4,7582.3,9385.3,14049.7,12665,14615,19170,21350.1,19589.9,21375];
>> x1=[25935,27596,28665,22567,33592,26729,29245,32381,36505,40742,44650];
>> x2=[3984.5,4100,4239,4334,4336,4340,4564,5201,5359,7785,17150];
>> x3=[410,432,436.5,438.12,440.73,468.62,437.46,458.47,517.74,736.84,887
然后y=a1*x1+a2*x2+a3*x3
求出a1,a2,a3
求大神帮忙啊
急用
