Question

cosh z + sinh z = -i. z=?

Answer 1

z−n(n ≥ 0) e−at z z − e−aT te−at. Tze−aT. (z − e−aT )2 t2e−at. T2ze−aT (z + e−aT ). (z − e− aT )3 sinh at z sinh aT z2 − 2z cosh aT +

Answer 2

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Hey mate !!

Answer in attachment

Hope it's help uh