Sco Question: 2
How many bits are used to encode a character according to the ASCII encoding
scheme?
2 bits
(ex: 10 encodes 'A')
4 bits
(ex: 1011 encodes 'A'
6 bits
(ex: 10 0110 encodes 'A')
8 bits
(ex: 0100 0001 encodes 'A')

Least square fit to polynomial write a function leastsquarefit3pol that solves a linear system of equations to find a least squares fit of a third order polynomial to an experimental data set given as two row arrays. the function leastsquarefit3pol must explicitly solve a set of linear equations and cannot use polyfit. there should be no restriction on the size of the problem that can be solved.