Trigonometry

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Explain why {y||y| ¡Ü 1} is the same as [-1,1].

  • Trigonometry -

    For
    {y | |y|≤1}

    By definition of the absolute function, |y| = y if y≥0, and
    |y| = -y if y<0.

    Therefore the possible values of |y|≤1 are [-1,1]

  • Trigonometry -

    THANKYOU :D

  • Trigonometry -

    You're welcome!

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