Instantly Periodic General Continued Fraction Representations of Square Roots

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This Demonstration provides a way to instantly write a periodic general continued fraction representation of square roots. This can be used as a quick way to easily approximate the numerical value of square roots.

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(As opposed to a general continued fraction, a simple continued fraction has all of its numerators equal to 1.)

The proof of this representation is quite simple; let . Then, , so and simplifying gives .

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Contributed by: Michael Morrison (March 2011)
Open content licensed under CC BY-NC-SA


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