Find af ax af ду af az af af af "7 ах ду ду = af 11 -(0, -1, 1) = and Find their values at (0, -1, 1) if possible. (If an answer is undefined, enter UNDEFINED.) af Әх дz -(0, -1, 1) = f(x, y, z) = af дz -(0, -1, 1) = 40 х2 +y2 + 22 000

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