Complete the derivations of equations (11.30) and (11.31).

(a) Substitute equation (11.28) for a into the second normal equation, equation

(11.22). Rearrange to obtain

(b) Distribute the product and sum separately, as in exercise 2.6e, factor out the constants, and confirm equation (11.30).

(c) Follow the same procedure with equations (11.28) and (11.25) to confirm equation (11.31).

Transcribed Image Text:

0= i=1 ((-)-b (xx)-2(x-2))