a. Show that If z=x+ iy where y < 0 Then: | e"|> 1 b. Evaluate: cosh (iz) + sin (2)

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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a. Show that If
z =x+iy where y <0
Then:
| ei*|> 1
b. Evaluate:
cosh (iz) + sin?(z)
Transcribed Image Text:a. Show that If z =x+iy where y <0 Then: | ei*|> 1 b. Evaluate: cosh (iz) + sin?(z)
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