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    If f is a function from R to R, and there exists a real number aE(0,1) such that |f'(x)|≤a for all xER , show that the equation x = f(x) has a solution.

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    If f is a function from R to R, and there exists a real number aE(0,1) such that |f'(x)|≤a for all xER , show that the equation x = f(x) has a solution.

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    https://brainmass.com/math/real-analysis/real-analysis-proof-function-88928

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    6. If f is a function from R to R, and there exists a real number such that for all , show that the equation x = f(x) has a solution.

    Proof. Consider a sequence defined by
    ...

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    A real analysis proof is provided. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.

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