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Thread: Binary Operations

  1. May 13th, 2006, 01:45 AM #1
    math magic
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    Binary Operations

    Need help on the following. Thanks.

    0#1=2
    Is # commutative, associative?


    Construct an operation table for * on {1,2,3,4} where, a * b = "the remainder when axb is divided by 5"

    Eg. 2 * 4 = 8/5 = 1R3 = 3
    Is this operation closed? associative? commutative? what is the identity?

    Solve the equations:
    a) z * 3 = 1
    b) b* (b * 2) = 3
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  2. May 13th, 2006, 04:35 AM #2
    x-ice
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    Re: Binary Operations

    Quote Originally Posted by math magic
    Need help on the following. Thanks.

    0#1=2
    Is # commutative, associative?


    Construct an operation table for * on {1,2,3,4} where, a * b = "the remainder when axb is divided by 5"

    Eg. 2 * 4 = 8/5 = 1R3 = 3
    Is this operation closed? associative? commutative? what is the identity?

    Solve the equations:
    a) z * 3 = 1
    b) b* (b * 2) = 3
    What is # used for?
    Reply With Quote Reply With Quote
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