Newton's Iteration
An algorithm for the Square Root of a number 
quadratically as 
,
where
. The first few approximants to 
are given by
For
, this gives the convergents as 1, 3/2, 17/12, 577/408, 665857/470832, ....See also Square Root- Irreducible Matrix
- Irreducible Polynomial
- Irreducible Representation
- Irreducible Semiperfect Number
- Irreducible Tensor
- Irredundant Ramsey Number
- Irreflexive
- Irregular Pair
- Irregular Prime
- Irregular Singularity
- Irrotational Field
- Isarithm
- ISBN
- I-Signature
- Island
- Isobaric Polynomial
- Isochronous Curve
- Isoclinal
- Isocline
- Isoclinic Groups
- Isodynamic Points
- Isoenergetic Nondegeneracy
- Isogonal Conjugate
- Isogonal Line
- Isogonic Centers