題組內容

1. (15%) You did an experiment and got the following data points of (x, y) pair: 
(0,0), (2,2), (3,6), and (4,12). 
You hypothesize that y = f(x) = a+bx, where 6100d0f0868ae.jpg You would like to fit f(x) to the data points.

(1.2) Find a column span of matrix A, that is, CS(A) ? (3%)