absolute value

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absolute value

Postby music321 on Sat Aug 02, 2014 5:19 pm

Hi,

I understand everything posted in the "absolute value" lesson section. I wonder, however, if there'd ever be a case where I'd need to find the "absolute value of negative x" without knowing if "negative x" is greater or less than zero. If so, how would I go about it? Thanks.
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Re: absolute value

Postby theshadow on Mon Aug 04, 2014 11:02 am

music321 wrote:I wonder, however, if there'd ever be a case where I'd need to find the "absolute value of negative x" without knowing if "negative x" is greater or less than zero. If so, how would I go about it?

It can come up in calculus. You have to do 2 cases: 1 where x < 0 & 1 where x >= 0.
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