Im trying to understand the steps to finding a point on the surface where the tangent plane is perpendicular to following tangent plane
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The plane has normal vector .
Find points on the surface at which the gradient is parallel to that vector.
on the surface of which vector?
Originally Posted by statman101 to finding a point on the surface where the tangent plane is perpendicular to following tangent plane I have no idea what the surface is.
You posted the above problem. I assumed that you had a surface to work from.
Originally Posted by statman101 on the surface of which vector? This makes no sense. A "vector" does not have a surface! If your surface is given by f(x, y, z)= constant, then is perpendicular to the surface. That vector must be parallel (so a multiple of) <1, 1, 1>. Now, what surface are you talking about?
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