Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated August 2025
Definition
The natural logarithm function ln(x) returns the exponent needed to obtain x as a result when raising Euler's number e (approximately 2.71828) to that exponent. In this case, ln(1+4x) refers to applying ln() specifically on the expression 1+4x.