, . , , , . .
x , , y. , : y = ax + b. , (.4). xi yi , , .
a b? , , (.4.).
. , , , . ( y) xi, yi : (axi +b -yi), | |
.4 |
:
(. , 7) a b.
(25) | |
(26) |
- S 02 a b - S a2 S b2 :
S 02 = | (27) |
(28) | |
Sb 2= | (29) |
a b :
D a p = S a D b p = S b
, b =0, 25, 27 28 . a :
(30) | |
(31) | |
(32) |
, 25-28 , , , . , . , . , , , , . a b, , :
|
|
(33) | |
(34) | |
(35) | |
(36) | |
(37) |
. . , a, b, D a D b
5
xi | yi | xi2 | yi2 | xi yi |
x1 | y1 | x12 | y12 | x1 y1 |
x2 | y2 | x22 | y22 | x2 y2 |
xn | yn | xn2 | yn2 | xn yn |
åxi | åyi | åxi2 | åyi2 | åx1 y1 |
33 -37
6
xi | yi | xi- | (xi- )2 | (xi- )yi | xi2 | (axi +b -yi)2 |
x1 | y1 | x1- | (x1- )2 | (x1- )y1 | x12 | (ax1 +b -y1)2 |
x2 | y2 | x2- | (x2- )2 | (x2- )y2 | x22 | (ax2 +b -y2)2 |
xn | yn | xn- | (xn- )2 | (xn- )yn | xn2 | (axn +b -yn)2 |
åxi | åyi | å(xi- ) | å(xi- )2 | å(xi- )yi | åxi2 | å(axi +b -yi)2 |