Complex Analysis: Theory and Applications · Problem 1.3.19

Complex Numbers — Howell & Matthews

Mathematics — Complex Analysis · reverse-triangle-inequality

Problem

Show that ∣∣z1∣−∣z2∣∣≤∣z1−z2∣\bigl||z_1| - |z_2|\bigr| \leq |z_1 - z_2|.

Related theory

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