19.12. Verify the following hyperbolic identities: (a) cosh? z – sinh? z = 1. (b) cosh(z1 + z2) = cosh z1 cosh z2 + sinh z1 sinh z2. (c) sinh(z1+ z2) = sin z1 cosh z2 + cosh z1 sinh z2.
19.12. Verify the following hyperbolic identities: (a) cosh? z – sinh? z = 1. (b) cosh(z1 + z2) = cosh z1 cosh z2 + sinh z1 sinh z2. (c) sinh(z1+ z2) = sin z1 cosh z2 + cosh z1 sinh z2.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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hi
My question is about Complex function and Derivative and
The given equations must be proved.
I showed in the upload photo.
Thank you very much !!
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