The concept of Lagrange interpolation is easily understood with help of the following figure.
In the figure, three points of the data "x" and "y" from a given Excel file are marked.
Their relationship with the "xi" and "yi" is described in the 2D-LAGRANGE by using the following equations in MATLAB.

With a Lagrange polynomial of degree 1 is given by:

Note 6add127376 zophlazh
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