Question

Part a - complex number in rectangular form what is (1+2j) + (1+3j)? your answer should contain three significant figures.

Answer 1

To add two or more complect number in the rectangular coordinate system, we add the real part togerther and add the imaginary parts together.

Therefore,
(1 + 2j) + (1 + 3j) = (1 + 1) + (2 + 3)j = 2 + 5j