Find the derivative of the function using the definition of derivative. f(x) = x^3 - 3x + 3 f'(x) = State the domain of the function. (Enter your answer in interval notation.) State the domain of its derivative. (Enter your answer in interval notation.)
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Using the definition of derivative, we have: f^(')(x) = lim(h->0) [f(x+h) - f(x)] / h f^(')(x) = lim(h->0) [(x+h)^(3) - 3(x+h) + 3 - (x^(3) - 3x + 3)] / h f^(')(x) = lim(h->0) [x^(3) + 3x^(2)h + 3xh^(2) + h^(3) - 3x - 3h + 3 - x^(3) + 3x - 3] / h f^(')(x) = Show more…
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