Real and Imaginary Parts

Two complex numbers are added. How do we do this?

• We add up all 4 numbers you see.

• We add up all the big numbers.

• We add only the real parts. Because we cannot see the imaginary parts.

Groups:

(a) Purely Real

,

(b) Purely Imaginary

,

(c) Complex (Non real)

Real and Imaginary parts of 3.5 - 2.7 i are___?

• Re=3.5

  Im=2.7

• Re=3.5

  Im=-2.7

• Re=-3.5

  Im=2.7

• Re=-3.5

  Im=-2.7

Find the real part of the complex number: 7 + 8i

• 7

• 8

• 15

• 1

Label the REAL part __ and the IMAGINARY part __ of the complex number.

b

a

IMAGINARY part

REAL part

Label the REAL part __ and the IMAGINARY part __ of the complex number.

b

a

REAL part

IMAGINARY part

Label the REAL part __ and the IMAGINARY part __ of the complex number.

b

a

IMAGINARY part

REAL part

Label the REAL part __ and the IMAGINARY part __ of the complex number.

b

a

REAL part

IMAGINARY part