Question: Evaluate dz using the given information. z equals 7 x squared plus 9 xy plus 5 y squaredz=7x2+9xy+5y2; x equals 2x=2, y equals negative 6y=6,

Evaluate dz using the given information. z equals 7 x squared plus 9 xy plus 5 y squaredz=7x2+9xy+5y2; x equals 2x=2, y equals negative 6y=6, dx equals 0.07dx=0.07, dy equals negative 0.02dy=0.02

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