Where does the plane tangent to z = e^(x-y) at (1,1,1) meet the z axis?

How do I go about solving this problem? Am I suppose to use the tangent plane equation?

- February 1st 2011, 08:24 PMelpermicWhere does the plane tangent to z = e^(x-y) at (1,1,1) meet the z axis?
Where does the plane tangent to z = e^(x-y) at (1,1,1) meet the z axis?

How do I go about solving this problem? Am I suppose to use the tangent plane equation? - February 1st 2011, 09:17 PMTheEmptySet