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Math Help - First Deivative

  1. #1
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    First Deivative

    Can anyone help solve the below by First Principles

    sqrt x-1 using formula F(x) = (X+H) - f(x) / H

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  2. #2
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    Re: First Deivative

    Quote Originally Posted by amle View Post
    Can anyone help solve the below by First Principles

    sqrt x-1 using formula F(x) = (X+H) - f(x) / H
    $\dfrac{{\sqrt {x + h} - \sqrt x }}{h} = \dfrac{1}{{\sqrt {x + h} + \sqrt x }}$
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