fufu6100 fufu6100 24-05-2023 Mathematics contestada a) the tangent plane at (1,4,ln5) is z =? b) the tangent plane at (-1,-4,ln5) is z =? Find an equation of the plane tangent to the following surface at the given points. z = In (1 + xy); (1,4, In 5) and (-1,-4, In 5)
