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william.briand Group Title

Is there a closed form formula that yields the number of digits in a decimally-based number ? A special function ?

  • 2 years ago
  • 2 years ago

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  1. anushkaudeshan Group Title
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    3sec^4 x - 10sec^2 x - 8 = 0, what is sin x

    • 2 years ago
  2. estudier Group Title
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    Don't understand the question. I give u 4.35, u want a formula that predicts that there are 3 digits in 4.35..

    • 2 years ago
  3. MathsBoy Group Title
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    If you want to know how many digits are in the integer x: \[\lfloor \ln(x)/\ln(10) \rfloor + 1\]

    • 2 years ago
  4. MathsBoy Group Title
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    Or of course, to compensate for negative values of x: \[\lfloor \ln(\left| x \right|)/\ln(10) \rfloor + 1\]

    • 2 years ago
  5. MathsBoy Group Title
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    The only problem is it doesn't give an answer for x = 0.

    • 2 years ago
  6. william.briand Group Title
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    Many thanks. (If this work for strictly positive integer, I'm OK)

    • 2 years ago
  7. MathsBoy Group Title
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    Any time.

    • 2 years ago
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