# Functions

Functions come in many shapes and sizes. In fact, you’ve already seen quadratic functions such as f(x) = x2 + 7x – 5 in the Algebra chapter and trigonometric functions such as f(x) = sin x and f(x) = cos x in the Trigonometry chapter.

### Video Lesson - Functions and Relations

div>

This chapter explains the specific notation, behavior, and properties of functions that you will need to know for the Subject Math test.

About six questions on the Subject Math cover functions. These questions can range from rather simple substitution problems to conceptual problems about the definition of a function to questions that test your ability to graph functions.

Next to display next topic in the chapter.

### Video Lessons and 10 Fully Explained Grand Tests

Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.

### About us

EntryTest.com is a free service for students seeking successful career.

CAT - College of Admission Tests. All rights reserved. College of Admission Tests Online Test Preparation The CAT Online