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Thread: undefined number

  1. Sep 6th, 2002, 08:35 PM #1
    SilverSprite
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    undefined number

    Do any of you know for sure if you can multiply an undefined number k/0 by 0 to get k or anything else? In other words can you do anything to an undefined number?
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  2. Sep 6th, 2002, 09:39 PM #2
    bugzpodder
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    NO
    Massey RuleZ! ^-^__Cheers!__^-^ Massey RuleZ!


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    The probability that a random rational number has an even denominator is 1/3 (Salamin and Gosper 1972)? This result is independently verified by me (2002)!
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  3. Sep 6th, 2002, 09:44 PM #3
    Kalkewl8ter
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    As I said, you can only declare it undefined.
    Merry Math Making!
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  4. Sep 6th, 2002, 09:59 PM #4
    bugzpodder
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    show you a case where what you said DOES work but it should never attempted (reader's discretion advised).

    tan(90+x)
    =(tan90+tanx)/(1-tan90tanx)
    =(1/0+tanx)/(1-tanx/0)

    multiply top and bottom by 0

    =(1+0)/(0-tanx)
    =-1/tanx
    =-cotx

    which is right

    you should actually consider splitting tan(90+x) into sin(90+x)/cos(90+x) to get the desired -cotx instead of operating on undefined values.
    Massey RuleZ! ^-^__Cheers!__^-^ Massey RuleZ!


    Did you know that...
    The probability that a random rational number has an even denominator is 1/3 (Salamin and Gosper 1972)? This result is independently verified by me (2002)!
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