Tiny problem with set comprehension

Jazzanova

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Joined
May 18, 2009
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Hi, im not sure if this is in the right forum but here is my problem

Let Q be the set of all rational numbers

A = { x:x E Q and -1< x > 5 }

and it asks me a few questions that i think i can do by myself.Howver,i am having trouble reading the < > signs.I know this is very basic but im confused.

-1 < x > 5

to me in english this reads

x has elements that are less that -1 (< is the less than sign) and greater than 5

but wouldnt this mean the seat is contains every number apart from whats between -1 to 5??
 
Jazzanova said:
Hi, im not sure if this is in the right forum but here is my problem

Let Q be the set of all rational numbers

A = { x:x E Q and -1< x > 5 }

and it asks me a few questions that i think i can do by myself.Howver,i am having trouble reading the < > signs.I know this is very basic but im confused.

-1 < x > 5

to me in english this reads

x has elements that are less that -1 (< is the less than sign) and greater than 5

but wouldnt this mean the seat is contains every number apart from whats between -1 to 5??

That would be my interpretation - but I am NOT very confident on these questions. pka can shed some light :idea: on this.....
 
Jazzanova said:
A = { x:x E Q and -1< x > 5 }

...i am having trouble reading the < > signs.
As far as I know, the usage shown is not standard, and thus has no particular meaning. You'll need to consult with your instructor (or your book) for how you're supposed to interpret this. :shock:
 
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