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1.10 Exploring Types of Discontinuities

Part of Limits and Continuity in AP® Calculus BC. Read the opening section, then create a free account for the full interactive lesson, practice, and progress tracking.

A function has a discontinuity at a point if it is not continuous there. In Unit 1, the main types are removable discontinuities, jump discontinuities, and infinite discontinuities. A removable discontinuity happens when the limit exists, but the function is either undefined at the point or has the wrong value there. A jump discontinuity happens when the left-hand and right-hand limits both exist but are different. An infinite discontinuity happens when the function grows without bound near the point, often creating a vertical asymptote.

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