Microsoft products like word and powerpoint can and are being used to
health care professionals communicate with each other virtually that is to say via the internet or via email, rather than face to face?

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.