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

Front

What letter represents an imaginary number? / ¿Cuál letra representa un número imaginario?

Back

i

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

Is it true that i = √-1? / ¿Es cierto que i = √-1?

Back

True / Verdadero

Front

What does i² equal? / ¿A qué equivale i²?

Back

-1

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 3 + 4i?

Back

3

Front

What is the imaginary part of the complex number 3 + 4i?

Back

4

Front

How do you subtract complex numbers? Give an example.

Back

To subtract complex numbers, subtract the real parts and the imaginary parts separately. Example: (5 + 3i) - (2 + 4i) = 3 - i.

Front

What is the result of (2 + 3i) - (1 + 2i)?

Back

1 + i