How do I write the matlab code for implementing the Bjorck-Pereyra algorithm?

2015 4 30
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function: a=BjorckPereyra(x,f)
Input: The function f(x) is given by its values stored in the vector f at points stored in the vector x.
Both arrays are of the same size n.
Output: The program 'BjorckPereyra' computes the vector of the coefficients a in: p_n-1(x)=a1+a2x+a3x^2+...+anx^n-1
where P_n-1(x) is the interpolating polynomial.
Any help is greatly appreciated!

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