Can someone help explain the meaning of
[q]=-q
I understand from this that q will be zero in this as absolute value of any number cannot be -ve.
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MartyMurray
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If you mean, |q| = -q, then q could be 0 or q could be negative, as the absolute value of a negative number, q, is the positive distance between q and 0, which is -q.ash4gmat wrote:Can someone help explain the meaning of
[q]=-q
I understand from this that q will be zero in this as absolute value of any number cannot be -ve.
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Gaurav Mittal
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Hi
I am not sure whether you meant [q] or |q|? Please confirm
|q| is called absolute value of q and is a very important function from GMAT point of view. GMAT loves to play with the properties of absolute values. Note:
|q| = q if q > 0
|q| = -q if q < 0
hence, if q is -2, |q| = - (-2) = 2.
Let me know if there is any specific doubt.
I am not sure whether you meant [q] or |q|? Please confirm
|q| is called absolute value of q and is a very important function from GMAT point of view. GMAT loves to play with the properties of absolute values. Note:
|q| = q if q > 0
|q| = -q if q < 0
hence, if q is -2, |q| = - (-2) = 2.
Let me know if there is any specific doubt.
Gaurav
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Hi ash4gmat,
Is this information from a larger GMAT question? I ask because it looks like it could be from a "Symbolism" question (a prompt that "makes up" a math symbol, tells you what it means, then asks you to perform a calculation with it). If that's the case, then this information tells us what the [ ] symbol 'means' - the rest of the prompt would then give us some additional information so that we could perform a calculation with it.
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Is this information from a larger GMAT question? I ask because it looks like it could be from a "Symbolism" question (a prompt that "makes up" a math symbol, tells you what it means, then asks you to perform a calculation with it). If that's the case, then this information tells us what the [ ] symbol 'means' - the rest of the prompt would then give us some additional information so that we could perform a calculation with it.
GMAT assassins aren't born, they're made,
Rich
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danielle07
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Matt@VeritasPrep
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(S)he is asking why, for 0 > q, |q| = -q.danielle07 wrote:You're question doesn't seem complete. Can you give the complete details on it?
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Matt@VeritasPrep
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The simplest way to address that question is to try numbers.
|-3| = 3 = -(-3)
|-10| = 10 = -(-10)
etc.
So if x is negative, |x| = -x
|-3| = 3 = -(-3)
|-10| = 10 = -(-10)
etc.
So if x is negative, |x| = -x
