Complex Numbers and Their Roots

Complex Numbers and Their Roots

Assessment

Interactive Video

Mathematics

11th - 12th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial extends a previous problem by exploring a method to solve complex roots, specifically focusing on the equation Z^6 = -64. It introduces the use of the complex plane to find solutions and explains how the roots lie on a circle. The tutorial emphasizes isolating solutions with real parts greater than zero and demonstrates the use of conjugates and magnitudes to solve the problem efficiently.

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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main focus of the problem introduced in the video?

Calculating derivatives

Integrating functions

Solving quadratic equations

Finding roots of a complex number

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the given complex number in the problem?

z^4 = 16

z^5 = 32

z^6 = -64

z^3 = 27

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the method used to find the roots of the complex number?

Using the quadratic formula

Using trigonometric identities

Using integration

Using the polar form of complex numbers

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What values can K take in the solution process?

0 to 4

0 to 5

0 to 6

0 to 3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the new method introduced for solving the problem?

Using algebraic manipulation

Using matrix operations

Using the complex plane

Using calculus

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the argument of the first solution on the complex plane?

Pi/4

Pi/2

Pi/3

Pi/6

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How are the roots distributed on the complex plane?

In a straight line

In a triangle

Around a circle

In a square

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which solutions are relevant for the problem?

Solutions with real parts greater than zero

Solutions with imaginary parts less than zero

Solutions with imaginary parts greater than zero

Solutions with real parts less than zero

9.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the relationship between Z1 and Z5?

Z5 is the double of Z1

Z5 is the inverse of Z1

Z5 is the square of Z1

Z5 is the conjugate of Z1