The expression 1/(Dx2 - Dy2) sin(x - y) is equal to

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The expression 1/(Dx2 - Dy2) sin(x - y) is equal to

Options:

A . -x/2 cos(x - y)

B . -x/2 sin(x - y) + cos(x - y)

C . -x/2 cos(x - y) + sin(x - y)

D . 3x/2 sin(x - y)

Answer: Option A

-NA-

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