定义两个n(n∈N*)的运算如下:X=(x1,x2,x3..xn),Y=(y1,y2,y3,...
1个回答
y=ax+b:
a=[(x1y1+x2y2+...xnyn)-nx'y']/[(x1^2+x2^2+...xn^2)-n(x')^2 ]
b=y'-ax'
x',y'分别为xi,yi的平均值
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