Numerical Analysis
posted by Ahmed .
Use appropriate Lagrange interpolating polynomials of degrees one, two, and three to approximate each of the following: a. f(8.4) if f(8.1) = 16.94410, f(8.3) = 17.56492, f(8.6) = 18.50515, f(8.7) = 18.8209
help pls

can anyone just tell which rule i can use
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