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    Increasing functions: Comparing Functions

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    Explain why the graph of f(x) is rising over an interval a < or equal to x < or equal to b if f '(x) > 0 throughout the interval. What can you say about the graph of f if f '(x) is less than zero on a < or equal to x < or equal to b?

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    Solution Summary

    Functions are compared using limits. The interval functions are solved.