2楼: Originally posted by dingd at 2014-03-05 13:12:13
x1, x2都为0时最小值为0；

3楼: Originally posted by qianzhanyi at 2014-03-12 15:53:45
非常感谢。疏忽了，现在重新看这个问题是有常数项的。
y=x1*sin(a*pi/180)+x2*cos(a*pi/180)+b

已知a b  求使y的平方和最小的x1和x2

a=
b=0.123419909        0.123108522        0.122119963        0.120914803        0.119502171         ...

Constant a=[85:-10:5], b=[0.123419909,0.123108522,0.122119963,0.120914803,0.119502171,0.117867303,0.116075055,0.114241383,0.111621904];
MinFunction Sum(a,b)((x1*sin(a*pi/180)+x2*cos(a*pi/180)+b)^2);