Question: DO NOT USE THE DIVERGENCE FORMULA. The heat flow vector field for conducting objects is F=-kgradT, where T(x,y,z) is the temperature in the object and

DO NOT USE THE DIVERGENCE FORMULA. The heat flow vector field for conducting objects is F=-kgradT, where T(x,y,z) is the temperature in the object and k is a constant that depends on the material. Compute the outward flux of F across the surface S for the given temperature distribution. Assume k=1.T(x,y,z)=80e-x-y;S consists of the faces of the cube |x|4,|y|4,|z|4.The outward flux is(Type an exact answer.)

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