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Thread: natural logarithm

  1. June 15th 2009, 06:31 PM #1
    yoman360
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    natural logarithm

    TRUE or FALSE?
    The function
    e^{ln x}
    is not defined for all real numbers x.
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  2. June 15th 2009, 06:32 PM #2
    Jhevon
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    Quote Originally Posted by yoman360 View Post
    TRUE or FALSE?
    The function
    e^{ln x}
    is not defined for all real numbers x.
    what do you think the domain is? do all real x work in ln(x)?
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  3. June 15th 2009, 07:00 PM #3
    yoman360
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    yeah its false because ln 0 = undefined
    x>0
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  4. June 15th 2009, 07:25 PM #4
    Jhevon
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    Quote Originally Posted by yoman360 View Post
    yeah its false because ln 0 = undefined
    x>0
    correct, in fact, it is undefined for all x \le 0
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