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Help on C3 Differentiation Pls watch

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    (Original post by RDKGames)
    (x^2+2)^2 > 0 so \frac{2-x^2}{(x^2+2)^2} <0 \Rightarrow 2-x^2 <0
    Okidoki thanks, I'm a bit iffy about multiplying both sides by something if one of the sides is a "0", I'm not sure why.
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Updated: November 5, 2017
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