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InterpolatingFunction[domain, table]
represents an approximate function whose values are found by interpolation.
  • InterpolatingFunction[...][x] finds the value of an approximate function with a particular argument x.
  • In standard output format, only the domain element of an InterpolatingFunction object is printed explicitly. The remaining elements are indicated by <>.  »
  • If you supply arguments outside of the domain, a warning is generated, and then an extrapolated value is returned.
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