jiehanthelearner
How Do you write "A is the set of even whole numbers less than 12" in the notation builder?



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ParthKohli
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\[\{\mbox{name of the set}:\mbox{condition}\}\]

jiehanthelearner
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can you write it for me? i still don't understand

ParthKohli
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What do you call the set of even whole numbers?

jiehanthelearner
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PartKohli? please help

ParthKohli
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Yes, I am helping ya. :)

jiehanthelearner
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Great,Thanks a bunch! you're very nice :D

jiehanthelearner
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my problem is i don't know how to write it
is it like this:
A={xx<...,x \[\in \] ...}
(note that "...." means i don't know what to put in there)

ParthKohli
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\[2\mathbb Z\]is the set of even numbers.

ParthKohli
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Where are you exactly stuck...?

jiehanthelearner
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um,i'm stuck in the "..." part.. what should i write there?

AravindG
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there you should write where the element belongs to

AravindG
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and also include any condition if present

ParthKohli
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\(x\) is more than or equal to \(0\) and less than or equal to \(12\).

ParthKohli
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For example, you can write the set of first ten natural numbers as:\[\{x\in\mathbb N: x \le 10\}\]

jiehanthelearner
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i see! Tx you two! you guys are very nice for a newcomer like me,haha! well,Tx Again!

ParthKohli
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Can you do it now? :)

jiehanthelearner
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hmm,kind off... well,Tx!

AravindG
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for example if you are asked to write set of all even numbers you can write it as
A={ x:x=2n ;n \(\in\) N}
N is set oof all natural numbers

AravindG
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*of

AravindG
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yw :)

ParthKohli
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Nah, I'd just use\[A = \{x:x\in2\mathbb Z \}\]And BTW, @AravindG, it should be the set of integers :)

AravindG
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I wanted to make it clear ..in schools we are first taught in that fashion ,then we play with it :) @ParthKohli

ParthKohli
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But even numbers belong to the set of integers, not only N.

AravindG
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*corrected :positive even numbers