Complex Numbers: Definitions + Simple Ops (Add, Subtract, Mult)

Front

What does i^2 equal?

Back

-1

Front

What is the result of (4 - 2i) - (3 + 6i)?

Back

1 - 8i

Front

What is the result of (3 + 2i) + (4 - 5i)?

Back

7 - 3i

Front

What is the product of (3i)(5i)? (Hint: i^2 = -1)

Back

-15

Front

What letter represents an imaginary number?

Back

i

Front

Define a complex number.

Back

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.

Front

What is the real part of the complex number 5 + 3i?

Back

5

Front

What is the imaginary part of the complex number 5 + 3i?

Back

3

Front

How do you add two complex numbers?

Back

Add the real parts and the imaginary parts separately.

Front

How do you subtract two complex numbers?

Back

Subtract the real parts and the imaginary parts separately.