6. The final answer to the following question is incorr Tell me, in your words, about the mistake that was made. Question: Find the derivative of f(x, y) = -5xy – y² at the point (-2, Solution: af Step 1: Step 2: -5y Te -5x – 2y fig Step 3: V/ 3 (-5у)i + (-52 — 2у)j Step 4: Vfl(-2,0) = 0i + 10j Step 5: D7i+8jf = (0, 10) · (7, 8) Step 6: D7i+8jf = 80 (final answer)

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