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    Howdy .

    What is it called when a variable is in between two lines.

    For example: |x|

    Also, what does it mean?

    Thanks
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    Absolute value of x

    Value in between the |...| is always positive

    E.g. |-3|= 3

    Posted from TSR Mobile
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    (Original post by makin)
    Howdy .

    What is it called when a variable is in between two lines.

    For example: |x|

    Also, what does it mean?

    Thanks
    It's the modulus function. It gives the absolute value of a function (if x>0 |x|=x, if x<0 |x|=-x)
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    (Original post by makin)
    Howdy .

    What is it called when a variable is in between two lines.

    For example: |x|

    Also, what does it mean?

    Thanks
    It means absolute value.
    https://www.mathsisfun.com/numbers/absolute-value.html
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    Modulus function has been applied

    It makes any negative number positive.

    E.g. |-5| = 5

    So |x|, or mod x, is definitely a positive value
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    (Original post by LeapingLucy)
    Modulus function has been applied

    It makes any negative number positive.

    E.g. |-5| = 5

    So |x|, or mod x, is definitely a positive value
    (Original post by an_atheist)
    It's the modulus function. It gives the absolute value of a function (if x>0 |x|=x, if x<0 |x|=-x)
    Thanks, really helpful answers .
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    (Original post by an_atheist)
    It's the modulus function. It gives the absolute value of a function (if x>0 |x|=x, if x<0 |x|=-x)
    What about if x=0?
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    (Original post by B_9710)
    What about if x=0?
    You get 0.
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    (Original post by an_atheist)
    You get 0.
    I know, I was being pedantic because you didn't define it.
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    The absolute value is The correct term yea it's not just The negative made positive incase The question asks for The absolute value And not |x|
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    It is used to define the "determinant of x".
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    Its the mod function
    if any negative value for e.g l -2 l this will ALWAYS come out positive
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    |x|= \sqrt{x^2}
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    many calculators have the Abs function which does the same thing
 
 
 
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