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Understanding Logs

  1. Apr 27, 2004 #1
    How would I go from seeing the pattern in the number of nines in the first n numbers, to writing the following formulae for it:


    I don't get how to put the log in (or how it works). Sorry, it is an easy question. Please help.
  2. jcsd
  3. May 1, 2004 #2
    One method would be to draw a graph of the number of 9s vs the number n, then fit a curve to it. This would, I think, require a computer since this is obviously not an intuitive relationship.
  4. May 1, 2004 #3
    I want to delete this thread: Don't know how to!!
  5. May 1, 2004 #4
    way you want to delete it ? :confused:
  6. May 1, 2004 #5
    I don't need the answer...pls dnt ask y - loong story i'd rather not say.

    I apologise for wasting your time.
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