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    Hey, what the hell is this supposed to mean

    |x-2| - 3

    I am doing a functions question....i looked at the back of my back..says something about a modulus
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    The modulus function simply means any negative value becomes positive. i.e mod(-5)=5
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    (Original post by Potassium^2)
    The modulus function simply means any negative value becomes positive. i.e mod(-5)=5
    so it becomes plus 2?? could it be possible that they should be square brackets? :confused:
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    (Original post by Sine)
    so it becomes plus 2?? could it be possible that they should be square brackets? :confused:
    The result from modulus X-2 will be positive, regardless of the number used.

    |-5-2| = |-7| = 7

    |5-2| = |3| = 3

    etc.
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    (Original post by -beads-)
    The result from modulus X-2 will be positive, regardless of the number used.

    |-5-2| = |-7| = 7

    |5-2| = |3| = 3

    etc.
    say you have |x-2| - 3 = 1

    that would be |x-2|= 4

    which would make x = 6? right
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    (Original post by Sine)
    say you have |x-2| - 3 = 1

    that would be |x-2|= 4

    which would make x = 6? right
    Yes.

    But x could also be -2.

    |-a| = +a

    Therefore let x = -2

    |-2 - 2| = |-4| = 4

    LHS = RHS

    Therefore x = -2 too.

 
 
 
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