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Which is Your Favourite Irrational Number? watch

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    I'm for e myself -I just love those natural logarithms!
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    (Original post by Ben.S.)
    I'm pro root pi!!!

    Ben
    lol rooting it doesnt make it any more irrational
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    (Original post by edders)
    lol rooting it doesnt make it any more irrational
    No, but it's the integral of exp^(-x^2) - what fun. A beautiful piece of maths.

    Ben
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    (Original post by Ben.S.)
    No, but it's the integral of exp^(-x^2) - what fun. A beautiful piece of maths.

    Ben
    hmm thats a bit beyond me, i only did alevel maths.
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    (Original post by Ben.S.)
    No, but it's the integral of exp^(-x^2) - what fun. A beautiful piece of maths.

    Ben
    Another reason why I like e -it's causing me the least trouble in calculus
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    (Original post by elpaw)
    i wonder if that is rational?
    Infinitely unlikely.
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    (Original post by Linda)
    Another reason why I like e -it's causing me the least trouble in calculus
    dy/dx of e^x = e^x
    nice and easy
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    What's phi? I did A-Level Maths and never heard of it!
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    dy/dx of e^x = e^x
    this is the same reason i like e, and it has many uses, roots of primes i aint used all that much, and pi gets a bit boring after a while. tho phi pi and e are all cool numbers
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    (Original post by Helenia)
    What's phi? I did A-Level Maths and never heard of it!
    I was wondering the same thing. Did/do you visit BBC boards?
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    (Original post by Bigcnee)
    Infinitely unlikely.
    What makes you so sure? A proof please...
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    (Original post by Helenia)
    What's phi? I did A-Level Maths and never heard of it!
    phi (the 'golden ratio') = 1/2 + root5/2 and 1/2 – root5/2

    http://www.mcs.surrey.ac.uk/Personal...html#simpledef
    it crops up a lot in nature
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    (Original post by Nylex)
    I was wondering the same thing. Did/do you visit BBC boards?
    I did indeed. Why, did/do you? Which ones?

    Thanks for the explanation, edders.
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    (Original post by Helenia)
    I did indeed. Why, did/do you? Which ones?
    Yeah, I used to. Can't remember what it was called now though. Your name just looked familiar.
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    (Original post by Helenia)
    What's phi? I did A-Level Maths and never heard of it!
    It's the solution to the quadratic equations:
    x² = x + 1, or x - 1 = 1/x.

    Its all so the ratio of consecutive fibonacci numbers as they get really big, the larger divided by the smaller. apart from that its more or less completely useless.
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    Maths is a **** subject.
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    (Original post by DamianHolt)
    Maths is a **** subject.
    Why?
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    (Original post by Nylex)
    Why?
    because it's boring, useless, and absolutely impossibly-rock-hard.
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    (Original post by Merry)
    They all are good!!! but my vote is for Phi: a very interesting number!
    you geek
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    (Original post by DamianHolt)
    because it's boring, useless, and absolutely impossibly-rock-hard.
    It may be boring to you, but it's certainly not useless.
 
 
 
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