The following data is given: -2 -1 1 and 1.5 3.2 4.5 3.4
a) Deduction and formation of the matrix required to solve the problem with polynomial adjustment order 3, handmade.
b) Make the resulting graphs in Matlab, checking whether or not the approximation was good (including the data given and the approximation as well). To do this, you need to solve the system of equations first with Matlab.
The following data is given: x -2 -1 3.2 0 4.5 1 3.4 2 2 у 1.5
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