Math, asked by pushkar1503, 1 year ago

The set of values of x
satisfying:
|x|>3 or
|x| </= 9 are what?

Answers

Answered by SunTheHelpingHand

➡️Since |x|>3, x can be

(-infinity,-3)U(3,+infinity)

➡️Since |x|</=9, X can be [-9,9]

So, x= [(-infinity,-3)U(3,+infinity)]U[[-9,9]]

So x=(-infinity,+infinity)

So x belongs to real numbers

SunTheHelpingHand: Wait, I'll update my answer

pushkar1503: thanks a lot

SunTheHelpingHand: Updated

pushkar1503: thanks for ur efforts but i didn't understand the third-last step... can u pls explain?

SunTheHelpingHand: Have you learnt sets?

pushkar1503: yes

SunTheHelpingHand: Yeah...so taking union of two sets

SunTheHelpingHand: It will give u (-infinity, +infinity)

SunTheHelpingHand: That we call Real numbers

pushkar1503: oh yes.... i get it.... thank u

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