Operations With Complex Numbers

[nycmathguy]

Section 2.4
Question 56

(2i)/(2 + i) + (5)/(2 - i)

(2i)/(2 + i) + (5)/(2 - i)

Let (2i)/(2 + i) = 0.4 + 0.8i.

Let (5)/(2 - i) = i + 2

I now get 0.4 + 0.8i + i + 2.

When adding, I get 2.4 + 1.8i.

You say?

 

[MathLover1]

correct

 

[nycmathguy]

correct

Complex numbers at this level are not too hard. Is there such a thing as calculus of complex numbers?