Exercise Solution 2.14
Let
[s1]
We have
[s2]
and
[s3]
Applying [2.103], we obtain
[s4]
Our linear polynomial is
[s5]

Exhibit s1: Least squares linear polynomial
Let
[s1]
We have
[s2]
and
[s3]
Applying [2.103], we obtain
[s4]
Our linear polynomial is
[s5]