Log of 15 (Base 10)
Logarithm Calculator
What is log 15?
Answer
log 15 ≈
1.1761
log here is the common log, base 10.
≈ — the logarithm is irrational; the value is rounded to 4 decimal places.
log 15 is the power you raise 10 to, to get 15: 10y = 15.
10¹ = 10 < 15 < 100 = 10², so 1 < log 15 < 2
log 15 = ln 15 / ln 10 ≈ 2.708050 / 2.302585 ≈ 1.1761
Answer point ≈ (15, 1.1761).
The curve y = log x passes through (1, 0) and (10, 1) and rises: for x > 1 the log is positive, for 0 < x < 1 negative.
See Also
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FAQ
What is log 15?
log 15 ≈ 1.1761
What is the difference between log 15 and ln 15?
ln 15 is the logarithm to base e, log 15 is to base 10: ln 15 ≈ 2.7081, log 15 ≈ 1.1761. One is the other divided by ln 10: log 15 = ln 15 / ln 10 ≈ 1.1761.
What is e?
e ≈ 2.71828 is the base of the natural logarithm: ln x is the logarithm of x to base e, so ln e = 1. It is an irrational number, like π.
See Also
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- Десятичный логарифм 15 (lg 15)
- Logaritmo decimal de 15 (log 15)
- Logaritmo decimal de 15 (log 15)