(a) Find all solutions z E C of the equation cosh z = -1. (b) Given that w = ei², show that tan z all solutions of the equation tan z = solution. -, if and only if w? and show that }(7 – i log 5) is one such -5. Hence determine

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ISBN:9780470458365
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4. (a) Find all solutions z € C of the equation cosh z = -1.
(b) Given that w = ei÷, show that tan z
all solutions of the equation tan z =
solution.
-, if and only if w² = -5. Hence determine
-* and show that (T – i log 5) is one such
Transcribed Image Text:4. (a) Find all solutions z € C of the equation cosh z = -1. (b) Given that w = ei÷, show that tan z all solutions of the equation tan z = solution. -, if and only if w² = -5. Hence determine -* and show that (T – i log 5) is one such
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