n 5
2067600 4.28955E+12206760043224b
47.83453637
-49.9722376
a -9.99444753
y
4055.941144
2
[x n r ∑=
x n xy n b ∑∑=
n
b
y a -∑=
a y +=
222)(][)([y y n x x n y
x xy n r ∑-∑∑-∑∑∑-∑=
2)(x x n y x xy n b ∑-∑∑∑-∑=
x b y a ∑?-∑=
bx