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The Domain of the Vector Field F(x,y,z)=lnxi+lnyj+lnzk\mathbf { F } ( x , y , z ) = \ln x \mathbf { i } + \ln y \mathbf { j } + \ln z \mathbf { k }

Question 80

Multiple Choice

The domain of the vector field F(x,y,z) =lnxi+lnyj+lnzk\mathbf { F } ( x , y , z ) = \ln x \mathbf { i } + \ln y \mathbf { j } + \ln z \mathbf { k } is


A) {(x,y,z) :x>y>z>0}\{ ( x , y , z ) : x > y > z > 0 \}
B) {(x,y,z) :xy>0}\{ ( x , y , z ) : x y > 0 \}
C) {(x,y,z) :xz>0}\{ ( x , y , z ) : x z > 0 \}
D) {(x,y,z) :yz>0}\{ ( x , y , z ) : y z > 0 \}
E) {(x,y,z) :x>0,y>0,z>0}\{ ( x , y , z ) : x > 0 , y > 0 , z > 0 \}

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