♾️ap calculus ab/bc review

Dx

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

In calculus, dx represents an infinitesimally small change or increment in x. It is often used when finding derivatives or integrating functions.