If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains ***.kastatic.org** and ***.kasandbox.org** are unblocked.

Main content

AP.CALC: FUN‑4 (EU), FUN‑4.A (LO), FUN‑4.A.2 (EK)

AP® is a registered trademark of the College Board, which has not reviewed this resource.