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bmwhype2
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What is the difference between x^2 > 1 and |x^2| > 1 02 Nov 2007, 06:15
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What is the difference between

x^2 > 1 and |x^2| > 1



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KillerSquirrel
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What is the difference between x^2 > 1 and |x^2| > 1 02 Nov 2007, 07:10
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|x^2| is the distance of x*x from zero on the number line, so I think that it has only one solution since -x has the same distance from zero as x has.

On the other hand x^2 has two solutions -x and x that are very different solutions.

:)
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rishi2377
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What is the difference between x^2 > 1 and |x^2| > 1 02 Nov 2007, 09:05
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KillerSquirrel
|x^2| is the distance of x*x from zero on the number line, so I think that it has only one solution since -x has the same distance from zero as x has.

On the other hand x^2 has two solutions -x and x that are very different solutions.

:)
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Are you sure that |x^2| means |x^2| is the distance of x*x from zero on the number line? I know that |x +/- 2| means distance of x from 2 on number line but I am not sure we can apply this of |x^2| as well.
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What is the difference between x^2 > 1 and |x^2| > 1 02 Nov 2007, 09:53
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rishi2377
KillerSquirrel
|x^2| is the distance of x*x from zero on the number line, so I think that it has only one solution since -x has the same distance from zero as x has.

On the other hand x^2 has two solutions -x and x that are very different solutions.

:)


Are you sure that |x^2| means |x^2| is the distance of x*x from zero on the number line? I know that |x +/- 2| means distance of x from 2 on number line but I am not sure we can apply this of |x^2| as well.
Show more


Why not ?

:?



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Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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Thank you for understanding, and happy exploring!