z = a + b·i
w = c + d·i
a + b·i - 3·(c + d·i) = 1
a - 3·c = 1
b - 3·d = 0
a + b·i + i·(c + d·i) = i
--> a + b·i + c·i - d = i
a - d = 0
b + c = 1
Man erhält also das Gleichungssystem
a - 3·c = 1
b - 3·d = 0
a - d = 0
b + c = 1
Ich erhalte die Lösung: a = 0.4 ∧ b = 1.2 ∧ c = -0.2 ∧ d = 0.4
z = 0.4 + 1.2·i
w = - 0.2 + 0.4·i