Question

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

Answer 1

3sec^4 x - 10sec^2 x - 8 = 0, what is sin x

Answer 2

Don't understand the question.

I give u 4.35, u want a formula that predicts that there are 3 digits in 4.35..

Answer 3

If you want to know how many digits are in the integer x:
\[\lfloor \ln(x)/\ln(10) \rfloor + 1\]

Answer 4

Or of course, to compensate for negative values of x:
\[\lfloor \ln(\left| x \right|)/\ln(10) \rfloor + 1\]

Answer 5

The only problem is it doesn't give an answer for x = 0.

Answer 6

Many thanks. (If this work for strictly positive integer, I'm OK)

Answer 7

Any time.