6. Evaluate the following partial derivatives, and indicate what derivative rules are used. [3] az when...

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6. Evaluate the following partial derivatives, and indicate what derivative rules are used. [3] az when 2(r, y) = (4r²y – 3ry*)10 xy [3] (b) x2 + y? 6. Evaluate the following partial derivatives, and indicate what derivative rules are used. [3] az when 2(r, y) = (4r²y – 3ry*)10 xy [3] (b) x2 + y?