A logarithm is the inverse of exponentiation. log_b(x) answers "to what power must b be raised to get x?" Common logarithm (base 10) is used in science; natural logarithm (base e) in calculus; binary logarithm (base 2) in computer science.
💡
Pro Tip
To estimate log₁₀ of any number mentally: count the digits and subtract 1. log₁₀(8,432) ≈ 3.9 (4 digits → between 3 and 4).
⭐
Did You Know?
The Richter scale, pH scale, decibel scale, and musical octaves are all logarithmic. A pH difference of 1 represents a 10× change in acidity, not a 1-unit linear change.
References
🔒
100% Gratuit
Fără înregistrare
✓
Precis
Formule verificate
⚡
Instant
Rezultate în timp ce tastezi
📱
Mobile Ready
Toate dispozitivele