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# Can someone explain to me what a modulus is... Watch

1. and a question that could be included with it.

|r| > 1 or something, what context could it be in and what is it?

Thanks
2. (Original post by 3607)
and a question that could be included with it.

|r| > 1 or something, what context could it be in and what is it?

Thanks
Size of

eg

|3|=3

|-3|=3
3. Absolute value/magnitude of.

For example, velocity (v) is a vector so has magnitude and direction e.g. -2.5m/s. Negative sign denotes direction relative to positive direction. |v| Would be the 2.5m/s, without direction, so just the magnitude of the velocity.

In pure maths it usually just means the magnitude of a number from 0, negative or positive. E.g. rather than saying -2<x<2, or -5<x<5, you can say |x|<2, or |x|<5. As the |x| (the absolute value/magnitude), cannot be less than zero.
4. (Original post by AtomicMan)
Absolute value/magnitude of.

For example, velocity (v) is a vector so has magnitude and direction e.g. -2.5m/s. Negative sign denotes direction relative to positive direction. |v| Would be the 2.5m/s, without direction, so just the magnitude of the velocity.

In pure maths it usually just means the magnitude of a number from 0, negative or positive. E.g. rather than saying -2<x<2, or -5<x<5, you can say |x|<2, or |x|<5. As the |x| (the absolute value/magnitude), cannot be less than zero.
Ok, thanks
5. (Original post by 3607)
and a question that could be included with it.

|r| > 1 or something, what context could it be in and what is it?

Thanks
A good way to think about it is 'the distance from zero on a number line'

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