- - Find all the first and second order partial derivatives of f(x, y) = 10 sin(2x + y) − 8 cos(x − y). A. of = f₂ = of B. = fy= მყ C. 8ºf = fzz = D. off = fyy = dy² E. F. 8²f 8z0y 8²f dydi || = : fyz = = : fzy =

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