Continued fractions

  • There's a limit
    problem
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    There's a Limit

    Age
    14 to 18
    Challenge level
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    Explore the continued fraction: 2+3/(2+3/(2+3/2+...)) What do you notice when successive terms are taken? What happens to the terms if the fraction goes on indefinitely?
  • More Twisting and Turning
    problem
    Favourite

    More Twisting and Turning

    Age
    11 to 16
    Challenge level
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    It would be nice to have a strategy for disentangling any tangled ropes...

  • Good Approximations
    problem

    Good Approximations

    Age
    16 to 18
    Challenge level
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    Solve quadratic equations and use continued fractions to find rational approximations to irrational numbers.
  • Golden Fractions
    problem

    Golden Fractions

    Age
    16 to 18
    Challenge level
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    Find the link between a sequence of continued fractions and the ratio of succesive Fibonacci numbers.
  • Placeholder: several colourful numbers
    problem

    Resistance

    Age
    16 to 18
    Challenge level
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    Find the equation from which to calculate the resistance of an infinite network of resistances.
  • Not Continued Fractions
    problem

    Not Continued Fractions

    Age
    14 to 18
    Challenge level
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    Which rational numbers cannot be written in the form x + 1/(y + 1/z) where x, y and z are integers?
  • All tangled up
    problem

    All Tangled Up

    Age
    14 to 18
    Challenge level
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    Can you tangle yourself up and reach any fraction?

  • Infinite Continued Fractions
    article

    Infinite Continued Fractions

    In this article we are going to look at infinite continued fractions - continued fractions that do not terminate.