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Math Help - Solving for the derivative

  1. #1
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    Solving for the derivative

    Not sure what this is called, but basically trying to derive the actual derivative of the function F(x)=3x^2 at (-2, 12)

    I would need to find F(-2+h) which I got to as 3h^2-12h+12 and then plugging it into the slope formula. This is where I'm getting confused.

    What I did: M=((3h^2-12h+12)-12)/h

    Is that correct? I know the derivative is 6x but I'm a little confused on getting to it on this question. Thanks!
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  2. #2
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    You are right there. Do not stop.
    Divide out the h. Then let h\to 0.
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  3. #3
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    Quote Originally Posted by Plato View Post
    You are right there. Do not stop.
    Divide out the h. Then let h\to 0.
    Ah, I see it now. Not sure why I was getting confused>.< Thanks a lot!
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