Inverse Interpolation


In Chapter 4, using interpolation methods, we found the value of the entry y for an intermediate value of the argument x, from a given table of value of x and y.

Sometimes we have to find the value of x for a given values of y not in the table. This reverse process is known as inverse interpolation.

Thus inverse interpolation is defined as the process of finding the value of the argument corresponding to a given value of the function lying between two tabulated functional values.

In this chapter, we use the following methods to find the value of the argument x for a given value of y.

  1. Lagrange’s inverse interpolation formula
  2. Successive approximation method or iteration method
  3. Reversion of series method ...

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