Help! can someone please explain what to do and what is meant by "use a limiting process"??? Thank you so much! Use a limiting process to find the gradients of the curve at the point indicated: f(x)=x^3 at x=2
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$\displaystyle f'(2) = \lim_{x \to 2} \frac{x^3 - 2^3}{x-2}$
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