Subjects complex analysis

Complex Set 04E527

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1. The problem is to understand and draw the set $$A = \{ z \in \mathbb{C} \mid |i + 3| > 4 \wedge \operatorname{Re}(z) \leq |m(2 + i)| \}$$ where $z$ is a complex number. 2. First, calculate the magnitude $|i + 3|$: $$|i + 3| = \sqrt{3^2 + 1^2} = \sqrt{9 + 1} = \sqrt{10} \approx 3.162$$ 3. The inequality $|i + 3| > 4$ becomes: $$3.162 > 4$$ which is false. 4. Since the first condition $|i + 3| > 4$ is false, the entire conjunction (AND) condition is false for all $z$. 5. Therefore, the set $A$ is empty because no $z$ satisfies the condition. 6. Hence, there is nothing to draw as the set $A$ contains no elements. Final answer: $$A = \emptyset$$