Question

Multiplying two complex numbers involves ______.

a. scaling
b. dilation
c. change in magnitude
d. scaling and rotation

Answer 1

I just took the test and the answer that was right was d. scaling and rotation

Answer 2

Multiplying a complex number by a real number

(x + yi) u = xu + yu i. In other words, you just multiply both parts of the complex number by the real number. For example, 2 times 3 + i is just 6 + 2i. Geometrically, when you double a complex number, just double the distance from the origin, 0.

binomial methods

Complex numbers use binomial methods of multiplication because unlike real numbers, imaginary numbers have two components.

So probably A. I sorry, but I need more information. Hope this helps

Explanation: