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Ify = ecos(), then which of the following differential equation is true? A y = y cos(x) - y'sin(x) B y = y' cos(x) -

Ify = ecos(), then which of the following differential equation is true? A y" = y cos(x) - y'sin(x) B y" = y' cos(x) - y sin(x) C y" = -y cos(x) - y'sin(x) D y" = -y'cos(x) + y sin(x) E None of the given choices

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