Recent content by zbot1

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    Composition of trigonometric functions, mean value theorem

    Thanks!
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    Composition of trigonometric functions, mean value theorem

    Homework Statement how to show using MVT that cos(cos x) is a contraction. Homework Equations | d/dx (cos(cos x)) | = | sin(cos x) sin(x) | < sin 1 < 1 The Attempt at a Solution Using that relation, the original problem is easily solved. My question is, how do we know: |...