Complex number math problems

I am new to MATLAB and could really use help writing code to convert these

Given the following complex numbers:

Z1 = 3.5 + j 5.5

Z2 = 3.71 angle( pi / 4 )

Z3 = 0.125 angle( -5*pi / 2 )

Z4 = 9 exp( - j * 45 degrees )

Find the following:

• Addition
• Subtraction
• Division
• Conjugates

[Walter Roberson]

Addition and subtraction and division between what and what?

[Dalton Houghton-Schaffer]

The functions of Z

Answer 1

[Nicolas B.]

Complex numbers work literally like all other numbers in MATLAB. The only interesting things are how you create them:

z1 = 1 + 3i; % first solution
z2 = 2 + 4j; % second solution (for engineers)
z3 = 3 * exp(pi/2*i); % solution amplitude and angle

Once you have complex numbers, you can multiply, add... with double-type data without any problem. If you want to extract the real or complex part, just real() or imag() functions.

[Dalton Houghton-Schaffer]

Thank you so much! How can I do a conjugate in MATLAB?

[Bruno Luong]

conj(z)