Question: i dont get it Use differentials to approximate the change in z for the given change in the independent variables. z= x - 2xy +

i dont get it

Use differentials to approximate the change in z for the given change in the independent variables. z= x - 2xy + y when (x,y) changes from (5,4) to (5.05,3.95) dz = 0 (Type an integer or a decimal.)

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