Complex Number Operations on TI-84 Calculator

This video tutorial demonstrates how to perform complex number operations on a TI-84 graphing calculator. It covers setting the calculator to complex mode, and performing addition, subtraction, multiplication, and division of complex numbers. The tutorial also explains how to raise the imaginary unit 'i' to various powers, providing step-by-step instructions and examples for each operation.

What is the first step to perform complex number operations on the TI-84 calculator?

• Press the ON button

• Set the calculator to complex mode

• Enter the complex number

• Press the GRAPH button

What is the sum of the complex numbers (5 + 2i) and (-2 - 4i)?

• 3 + 6i

• 7 - 2i

• 3 - 2i

• 1 + 2i

What is the result of subtracting (9 - 6i) from (6 - 2i)?

• -3 + 4i

• 3 + 4i

• 3 - 4i

• -3 - 4i

What is the product of the complex numbers (5 + 4i) and (4 - 7i)?

• 19 + 48i

• 19 - 48i

• 48 - 19i

• 48 + 19i

What is the square of the complex number (3 - 2i)?

• 5 + 12i

• 5 - 12i

• 9 - 4i

• 9 + 4i

What is the result of multiplying the complex conjugates (7 + 5i) and (7 - 5i)?

• 49 + 25i

• 49 - 25i

• 0

• 74

How should you handle 'i' in the denominator when dividing complex numbers?

• Leave it as is

• Multiply by the conjugate of the denominator

• Add 'i' to the numerator

• Subtract 'i' from the numerator

What is the result of dividing (3 + 4i) by (7 - 3i) in fraction form?

• 9/58 + 37/58i

• 37/58 + 9/58i

• 9/58 - 37/58i

• 37/58 - 9/58i

What is 'i' raised to the 5th power?

• -i

• i

• -1

• 1

What is 'i' raised to the 87th power?

• 1

• -i

• -1

• i