Ch 29: CUNY Assessment Test in Math: Complex Numbers

About This Chapter

Let us help you study for CUNY Assessment Test in Math questions on operations with complex numbers, the number ''i'' and the polar form. This chapter offers a variety of tools to point you towards test success.

CUNY Assessment Test in Math: Complex Numbers - Chapter Summary

The lessons in this chapter offer a review of operations with complex numbers and imaginary numbers as you prepare for the CUNY Assessment Test in Math. Use these videos, short quizzes and other study aids to refresh your knowledge of topics including:

  • How to work with the imaginary square root of -1
  • Addition, subtraction, multiplication and division with complex numbers
  • Graphs of complex numbers
  • Polar form of complex numbers
  • De Moivre's theorem

You can watch these videos, which average about five to ten minutes in length, anytime using a computer, smartphone or tablet. Lesson quizzes and a chapter exam offer a way to assess your learning, and a clickable timeline uses video links to allow you to quickly jump back to specific points in the lesson you want to re-visit.

CUNY Assessment Test in Math: Complex Numbers Chapter Objectives

CUNY uses this Assessment Test in Math to determine placement in college mathematics classes. The exam has four sections, and questions on complex numbers are in the College Algebra section.

The questions on the exam are multiple choice, requiring you to solve a problem and select the correct answer from several options. Our lesson quizzes and the chapter exam give you experience answering these types of questions and also let you see where you require additional study before test day.

5 Lessons in Chapter 29: CUNY Assessment Test in Math: Complex Numbers
Test your knowledge with a 30-question chapter practice test
What is an Imaginary Number?

1. What is an Imaginary Number?

The imaginary number 'i' is the square root of -1. Although this number doesn't actually exist, pretending that it does allows us to do a bunch of crazy math that scientists use every day. Learn the basics of that number 'i' here!

How to Divide Complex Numbers

2. How to Divide Complex Numbers

While adding, subtracting and multiplying complex numbers is pretty straightforward, dividing them can be pretty tricky. It comes down to the process of multiplying by the complex conjugate. Learn about what that is, and how to do it, here.

How to Add, Subtract and Multiply Complex Numbers

3. How to Add, Subtract and Multiply Complex Numbers

Knowing that complex numbers exist is the first step. But that knowledge alone won't help you do much with them. Learn the basics of complex number addition, subtraction and multiplication here!

How to Graph a Complex Number on the Complex Plane

4. How to Graph a Complex Number on the Complex Plane

Graphing complex numbers is pretty straight forward, but it's not necessarily intuitive. Check out this lesson to learn the vocabulary and the conventions that you'll need.

Complex Numbers in Polar Form: Process & Examples

5. Complex Numbers in Polar Form: Process & Examples

After watching this video lesson, you will be able to convert complex numbers from rectangular form to polar form easily by following the formulas you will see here. You will also learn how to find the power of a complex number.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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