Englishfor English speakers
extrapolation
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noun
(mathematics) calculation of the value of a function outside the range of known values
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noun
an inference about the future (or about some hypothetical situation) based on known facts and observations
method
Noun
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If you use a method to achieve a goal, then you use a planned process.
It is quite simple to use the method described in Section 7.2 to find the solution.
My preferred method for contacting friends overseas is on the Internet.