Calculus: Derivatives 2

More free lessons at: http://www.khanacademy.org/video?v=ay8838UZ4nM More intuition of what a derivative is. Using the derivative to find the slope at any po…
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14 thoughts on “Calculus: Derivatives 2

  1. my teacher told us to plug in x+h where there is an x in the original
    equation…how come you replaced the x with 3? I know that the 3 is the
    given value..but why plug it in? i

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