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    I came across a question where at the beginning a function was defined as g(x)=9-2x^2 (x \in 3) I didn't understand what this would mean graphically, could some one explain?
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    Are you sure that didn't say x \in \mathbb{R} ?
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    Are you sure it says [tex]x \in 3[\tex]? That doesn't make much sense.
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    Heres a photo
    Attached Images
     
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    (Original post by MathMan)
    Heres a photo
    Looks like a typo to me.
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    (Original post by claret_n_blue)
    Are you sure it says [tex]x \in 3[\tex]? That doesn't make much sense.
    I know thats why i've asked look at the photo I attached
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    (Original post by Mr M)
    Looks like a typo to me.
    Thanks for clearing that up, its the AQA specimen C3 paper btw
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    (Original post by MathMan)
    Thanks for clearing that up, its the AQA specimen C3 paper btw
    Specimen papers are notoriously riddled with errors.
 
 
 
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Updated: December 31, 2012
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