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Math Help - Meaning of x:x < 9

  1. #1
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    Meaning of x:x < 9

    Actually it's C={x:x < 9}, does that mean x is lesser than 9 ?

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  2. #2
    Rhymes with Orange Chris L T521's Avatar
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    Re: Meaning of x:x < 9

    Quote Originally Posted by FailInMaths View Post
    Actually it's C={x:x < 9}, does that mean x is lesser than 9 ?

    Thanks
    Yes, you're right. C=\{x:x<9\} is the set theoretic way of saying the interval (-\infty,9).
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    Re: Meaning of x:x < 9

    Quote Originally Posted by Chris L T521 View Post
    Yes, you're right. C=\{x:x<9\} is the set theoretic way of saying the interval (-\infty,9).
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