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Talk:Steffensen's method

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Typo?

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The "units" seem to be inconsistent in this formula at the end of the derivation:

The numerator is subtracting from Suppose the values of P are distances measured in meters. Then has units of distance (meters) and has units of area (meters^2). One cannot subtract a distance from an area. Is there a typo in the given formula? - Ac44ck (talk) 04:37, 26 December 2008 (UTC)[reply]

This was fixed on 11 February 2010. Thank you. Ac44ck (talk) 14:11, 1 August 2010 (UTC)[reply]

Quadratic convergence

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It's unclear from the article what are the requirements for quadratic convergence. bungalo (talk) 18:24, 20 April 2010 (UTC)[reply]