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    Definition of derivative

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    Let f(x) be a continuous function of one variable.
    a) Give the definition of the derivative.
    b) Use this definition to find the derivative of f(x)=x^2+2x-5
    c) Evaluate f'(2)

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    Solution Summary

    In this problem we give the mathematical definition of the derivative. We illustrate how this definition is used with an example.