Log Base 4 of 25
Logarithm Calculator
What is log₄ 25?
Answer
log4 25 ≈
2.3219
log4 is the log base 4.
≈ — the logarithm is irrational; the value is rounded to 4 decimal places.
log4 25 is the power you raise 4 to, to get 25: 4y = 25.
4² = 16 < 25 < 64 = 4³, so 2 < log4 25 < 3
log4 25 = ln 25 / ln 4 ≈ 3.218876 / 1.386294 ≈ 2.3219
Answer point ≈ (25, 2.3219).
The curve y = log4 x passes through (1, 0) and (4, 1) and rises: for x > 1 the log is positive, for 0 < x < 1 negative.
See Also
- Square Root Calculator - Calculate the square root of any number
- Simplify Square Root Calculator - Write any square root in simplest radical form, step by step
- Scientific Calculator with Memory & History - Free Engineering Calculator Online with Memory Function, Operation History, Logarithms & Trigonometry. Similar to ti-83, ti-84, ti-89
FAQ
What is log₄ 25?
log₄ 25 ≈ 2.3219
How to calculate log₄ 25 on a calculator?
Divide the natural logs: log₄ 25 = ln 25 / ln 4 ≈ 3.218876 / 1.386294 ≈ 2.3219.
What does log without a base mean?
At school and on a calculator, log x without a base is the common log, base 10: log 100 = 2. In Python, math.log(x) is the natural log ln x; in Excel, LN is the natural log and LOG is base 10.
See Also
- Log Base 3 of 81 (log₃ 81)
- Log Base 4 of 0.0625 (log₄ 0.0625)
- Log Base 4 of 1 (log₄ 1)
- Log Base 4 of 2 (log₄ 2)
- Log Base 4 of 3 (log₄ 3)
- Log Base 4 of 4 (log₄ 4)
- Log Base 4 of 5 (log₄ 5)
- Log Base 4 of 6 (log₄ 6)
- Log Base 4 of 8 (log₄ 8)
- Log Base 4 of 16 (log₄ 16)
- Log Base 4 of 64 (log₄ 64)
- Log Base 5 of 1 (log₅ 1)
- Log Base 5 of 3 (log₅ 3)
- Log Base 5 of 4 (log₅ 4)
- Log Base 5 of 5 (log₅ 5)
- Log Base 5 of 7 (log₅ 7)
- Log Base 5 of 9 (log₅ 9)
- Log Base 5 of 10 (log₅ 10)
- Log Base 5 of 25 (log₅ 25)
- Log Base 5 of 125 (log₅ 125)
- Логарифм 25 по основанию 4 (log₄ 25)
- Logaritmo en base 4 de 25 (log₄ 25)
- Logaritmo de 25 na base 4 (log₄ 25)