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Unit 2: Differentiation: Definition and Fundamental Properties

AP Calculus AB — Note Packet

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Key Terms

secant line

A line connecting ____ points on a function, representing the average rate of change.

instantaneous rate of change

The exact rate of change at a ____ point, found by taking the limit as the interval approaches zero.

limit

The mathematical tool that allows us to approach something infinitely close without actually ____ it.

tangent line

A line that touches a curve at just ____ point and shares its direction, whose slope is the instantaneous rate of change.

derivative

The fancy name for the instantaneous rate of change, representing the ____ of the tangent line at any given point.

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