Find all the first and second order partial derivatives of f(x, y) = 3 sin(2x + y) - 3 cos(x − y). af მე A. off = fx fy af B. O მყ = C. 0² = frx = მ2 D. 974 = fyy მყ2 E. 9ry = fyr = дхду F. 0 = fry = მყმ -

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