Question: Consider the following expression: z = sin(y + it) + cos(y-it) where z, y, and t are variables, and ;=1 is a complex number.

Consider the following expression: z = sin(y + it) + cos(y-it) where

Consider the following expression: z = sin(y + it) + cos(y-it) where z, y, and t are variables, and ;=1 is a complex number. The partial differential equation derived from the above expression is (a) (c) az az at ay z at ay 0 (b) az az at ay z az at ay (d) +1

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