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Math Help - |xtanx| <= |x|

  1. #1
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    |xtanx| <= |x|

    I simplified the equation above to |tanx| <= 1
    so -1 <= to tanx <= 1, so what does this say about x?

    The problem says "for what x is it true that: ?"
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  2. #2
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    Quote Originally Posted by zweevu View Post
    I simplified the equation above to |tanx| <= 1
    so -1 <= to tanx <= 1, so what does this say about x?

    The problem says "for what x is it true that: ?"
    Hi

    -1 <= to tanx <= 1 for -pi/4 + k pi <= x <= pi/4 + k pi
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