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3. Draw the following regions on the xy-plane. Justify your work. (a) {z EC: 4 < |z| < 6} (b) {z EC: |z1|² = 1}

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

Chapter10: Analytic Geometry

Section10.6: The Three-dimensional Coordinate System

Problem 41E: Does the sphere x2+y2+z2=100 have symmetry with respect to the a x-axis? b xy-plane?

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Question

3. Draw the following regions on the xy-plane. Justify your work.
(a) {z € C: 4 < |z| < 6}
(b) {z E C : |z1|² = 1}

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