Find an equation for the plane tangent to the graph of z = 6 cos(xy) at the point (2, π/6, 3).
i went on to find
partial derivative x = -6 y sin(xy)
partial derivative y = -6 x sin(xy)
then i used the equation for tangent plane
The thing is, i have no idea if i did this problem correctly or not. I haven't been taught how to deal with problems like this and trying to learn on my own. Can anyone help? Thanks!