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How can you represent a graphic element in a wireframe?
You can specify a graphic element by using a(n) (blank)

When you collaborate or meet with a person or group online, it is called

If your accelerator suddenly gets stuck what should you do

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.