Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Logarithmic functions are the inverse of exponential functions. They help us solve for exponents by finding what power we need to raise a base to get a certain value.
Related terms
Base: The base of a logarithmic function is the number being raised to a certain power.
Common Logarithm: The common logarithm uses base 10 and is written as log(x).
Natural Logarithm: The natural logarithm uses base e (approximately 2.71828) and is written as ln(x).