The solution of d2z / dx2 + z = 0, given that when x = 0, z = ey and d – McqOptions

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1.	The solution of d2z / dx2 + z = 0, given that when x = 0, z = ey and dz / dx = 1 is
A.	Z = cos x + ey sin x
B.	Z = sin x + ey cos x
C.	Z = cos x + sin x
D.	Z = e2y tan x
Answer» C. Z = cos x + sin x

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