Introduction to Complex Numbers

Introduction to Complex Numbers

11th Grade

19 Qs

quiz-placeholder

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Introduction to Complex Numbers

Introduction to Complex Numbers

Assessment

Quiz

Mathematics

11th Grade

Hard

CCSS
HSN.CN.A.1, HSN.CN.A.2, HSN.CN.B.4

Standards-aligned

Created by

Anthony Clark

FREE Resource

19 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is (3 - 5i) + (-4 + 7i)?

-1+2i

1+2i

7-12i

-2+3i

Tags

CCSS.HSN.CN.A.2

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is (-5 + 3i) - (4 + 7i)?

-1- 4i

-1+4i

-9-4i

-9+4i

Tags

CCSS.HSN.CN.A.2

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If z1 = 2 + 5i and z2 = 3 - 2i, what is z1 × z2 as a single complex number?

-4+11i

16-19i

6-10i

16+11i

Tags

CCSS.HSN.CN.A.2

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is (4 - 5i)(-2 + 7i)?

27+18i

-43+18i

-43+38i

27+38i

Tags

CCSS.HSN.CN.A.2

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is a complex number?

A number that can be expressed in the form a + bi, where a and b are real numbers, and i is the imaginary unit.

A number that can only be expressed in the form a - bi

A number that has no real part

A number that can only be expressed in the form a + bi

Answer explanation

A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is the imaginary unit. This choice correctly defines a complex number.

Tags

CCSS.HSN.CN.A.1

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An imaginary number is also part of which of the following set of numbers?

Real

Whole

Irrational

Complex

Rational

Tags

CCSS.HSN.CN.A.1

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A complex number can be expressed as a + bi. What does a represent?

the real part of the complex number

the imaginary part of the complex number

depends on the sign of the number

the square root of the complex number

Tags

CCSS.HSN.CN.A.1

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