Landen's Transformation
If 
, then
See also Elliptic Integral of the First Kind, Gauss's Transformation
References
Abramowitz, M. and Stegun, C. A. (Eds.). ``Ascending Landen Transformation'' and ``Landen's Transformation.'' §16.14 and 17.5 in Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing. New York: Dover, pp. 573-574 and 597-598, 1972.
- Boundary Set
- Boundary Value Problem
- Bounded
- Bounded Variation
- Bound Variable
- Bourget Function
- Bourget's Hypothesis
- Boustrophedon Transform
- Bovinum Problema
- Bow
- Bowditch Curve
- Bowley Index
- Bowley Skewness
- Bowling
- Box
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- Boxcar Function
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- Box-Muller Transformation
- Box-Packing Theorem
- Boy Surface
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- Bra