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Mathematics 11 Online
OpenStudy (lstrasmann):

Would I be correct in saying that |y| < -2 has no solution?

OpenStudy (anonymous):

no |y|=+-y |y|<-2 => y<-2 & y>2

OpenStudy (zzr0ck3r):

|anything| is 0 or positive, can anything less than -2 be 0 or positive?

OpenStudy (lstrasmann):

No

OpenStudy (agent0smith):

Absolute value is basically defined as \[\Large \left| n \right| \ge 0\] ie the absolute value of any number is AT LEAST zero. Can't ever be smaller than 0.

OpenStudy (agent0smith):

So, yes you're correct.

OpenStudy (lstrasmann):

OK, thanks guys.

OpenStudy (zzr0ck3r):

yet another way to think about it \[|a|<b\iff -b <a<b\]

OpenStudy (agent0smith):

^ that works too. And it'd tell you |y| < -2 ===> 2 < y < -2... ie y is greater than 2, but also less than -2 (which doesn't make sense)

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