1. Find the equation of the tangent plane and normal line to 3:2 + y2 2mg :1: + 3y z : 4 at (2, 3, 18). 2. Find parametric equations for the line tangent to the curve of intersection of the surfaces at the given point: Surfaces: a: + y2 + 22 = 4, a: = 1 Point: (1,1, 1) Hint: The tine should be perpendicular to both the surfaces, and. hence in the direction of the 'cross pmduct' of their respective gradients