Fit a quadratic polynomial to the points (1,4), (3,8), (-2,8)
by writing the general equation, setting up and solving of 3 linear equations.
how to solve using row-reduce method?
The general quadatic is: .
Those three points must satisfy the equation, so we have:
Then we have the augmented matrix: .
. . and I assume you know how to row-reduce it . . .