Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2027 exam
Verified for the 2027 exam•Written by the Fiveable Content Team • Last updated August 2025
Definition
The set of all input values for which a function is defined; for logarithmic functions, the argument must be positive; for other functions, restrictions may apply.
AP course connection
Topic 1.13: 1.13 Function Model Selection and Assumption Articulation