Lagrange's interpolation formula

Jim Farmer

Research output: Contribution to journalArticlepeer-review


In issue 31(2) of the Australian Senior Mathematics Journal, Kok (2017) describes a useful four-step process for investigating number patterns and identifying the underlying function. The process is demonstrated for both linear and quadratic functions.

With respect to the quadratic example, I provide an additional idea relevant to step 3 and demonstrate the use of Lagrange's interpolation formula as an alternative method for completing step 4.
Original languageEnglish
Pages (from-to)8-12
Number of pages5
JournalAustralian Senior Mathematics Journal
Issue number1
Publication statusPublished - 2018


  • Interpolation


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