Show that (a) cos(iz) = cos(iz) for all z; (b) sin(iz) = sin(iz) if and only if

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Show that
(a) cos(iz) = cos(iz) for all z;
(b) sin(iz) = sin(iz) if and only if z = nπi (n = 0, ±1, ±2, . . .).

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Complex Variables and Applications

ISBN: 978-0073051949

8th edition

Authors: James Brown, Ruel Churchill

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Question Posted: Jun 01, 2016 01:40 AM

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Show that (a) cos(iz) = cos(iz) for all z; (b) sin(iz) = sin(iz) if and only if

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a Use expression 14 Sec 34 to write And This shows that b Use expression 13 Sec 34 to write And Ev...View the full answer

Complex Variables and Applications

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