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Calculus
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Difference quotient f(x+h)-f(x) / h

(1) f(x)=3+4x^2-2x^3

Jan 15th, 2015

Since f'(x) is a limit, it may or may not exist. That is, the quantities [f(x+h) - f(x)]/h may or may not approach a fixed number as h approaches zero. If everything works out fine and the limit exists, then we say that f is differentiable at x. Otherwise, we say that f is not differentiable at x.


Jan 15th, 2015

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