Question

kartesian cordinates in polar cordinates.

Answer 1

for the complex number z1=-2-2j calculate the following exercise:

z1*|z1|

Now I have done this but its false because the result is 8.

-2-2j*|-2-2j| now the absolut value do the value positive.

(-2-2j)*(2+2j) but is wrong how I can do it correctly?