4T (b) 4x+y- (d) x-y+4z COS a . t4a + B,y sin B, z The equation for the plane tangent to S at the point (r,0.0) is given by (a) x+y-2TZ (c) 4x 4T Let S be the surface defined by the parametric equations
take the gradient of the options given in the question, then one of the obtained equation match with the equation1 in my page.. logic is- gradient equation is normal to the plane, ...