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# Unit 1: Limits and continuity

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## About this unit

Limits describe the behavior of a function as we approach a certain input value, regardless of the function's actual value there. Continuity requires that the behavior of a function around a point matches the function's value at that point. These simple yet powerful ideas play a major role in all of calculus.

## Estimating limits from tables

### Practice

#### Quiz 1

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## Limits by direct substitution

### Practice

#### Quiz 2

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## Squeeze theorem

### Practice

#### Quiz 3

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## Removing discontinuities

### Practice

#### Quiz 4

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## Limits at infinity

### Practice

#### Quiz 5

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## Intermediate value theorem

### Practice

#### Quiz 6

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Up next for you:

#### Unit test

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