Verify inequalities (3), Sec. 4, involving Re z, Imz, and |z|. |z1 + z2| |z1| +

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Verify inequalities (3), Sec. 4, involving Re z, Imz, and |z|.
|z1 + z2| ≤ |z1| + |z2|.
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Complex Variables and Applications

ISBN: 978-0073051949

8th edition

Authors: James Brown, Ruel Churchill

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