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
An increasing function is one in which the values of the function increase as the input increases. A decreasing function is one in which the values of the function decrease as the input increases.
Related terms
Local Maximum/Minimum: A local maximum occurs when a function reaches its highest point within a specific interval, while a local minimum occurs when a function reaches its lowest point within that interval.
These are points on a graph where either the derivative is zero or does not exist. They can be used to determine whether a function is increasing or decreasing.