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Math Help - Trigonometric inequality.

  1. #1
    MHF Contributor Also sprach Zarathustra's Avatar
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    Trigonometric inequality.

    Is this true inequality?

    |tan(x)-tan(y)|<|sin(x)-sin(y)|

    I think it,s not true, because the strong inequality.


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  2. #2
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    Consider when y = 0
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  3. #3
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    x=\displaystyle \frac{\pi}{3}, y=0 , it's false
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