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# Unit 1: Get ready for limits and continuity

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In calculus, you'll encounter continuous functions that approach—but never get to—a limit. Don't worry if these functions sound funky—after reviewing skills such as factoring and trigonometric ratios to analyze different kinds of functions, you'll feel continuously limitless in the kinds of functions you can tackle!

## Composing functions

### Practice

#### Quiz 1

Level up on the above skills and collect up to 480 Mastery points

## Piecewise functions

### Practice

#### Quiz 2

Level up on the above skills and collect up to 240 Mastery points

## Introduction to factoring

### Practice

#### Quiz 3

Level up on the above skills and collect up to 320 Mastery points

## Factoring higher degree polynomials

### Practice

#### Quiz 4

Level up on the above skills and collect up to 400 Mastery points

## The Pythagorean identity

### Practice

#### Quiz 5

Level up on the above skills and collect up to 480 Mastery points

## Trigonometric identities on the unit circle

### Practice

#### Quiz 6

Level up on the above skills and collect up to 320 Mastery points

## Multiplying and dividing rational expressions

### Practice

#### Quiz 7

Level up on the above skills and collect up to 400 Mastery points
Up next for you:

#### Unit test

Level up on all the skills in this unit and collect up to 3,300 Mastery points!