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Questions on interpolation, the estimation of the value of a function from given input, based on the values of the function at known points.

Interpolation is the estimation of the output of a function with input X, when X is "in between" some inputs for which the outputs are known. (When X is not "in between", the process is "extrapolation".) The details, techniques, and precise meaning of interpolation depends heavily on the sub-discipline of mathematics, therefore you are encouraged to use additional subject tags such as , , or when appropriate.

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