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30 June, 12:21

Solve for: lim x>0 - ((x+deltaX) ^2+x+deltaX - (x^2+x)) / deltaX

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  1. 30 June, 14:44
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    2 (x + delta x) = 2x + 2 delta x

    so on top you have 2x + 2 delta x - 2x

    which is 2 delta x

    the delta x cancels out and you are left with just 2

    so the limit is 2
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