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Lagrange interpolation using modulo

terasajan asked:

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The function F(x) is a polynomial of degree 3.
And given the values of x and y = F(x) mod 251
it is required to reconstruct the polynomial F(x)
x is finite and has only 3 discrete values
how could we solve this using lagrange interpolation

if i have used modulo function in the polynomial then how can i use lagrange interpolation
Tags: Matlab


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