If you have a surface with the partial derivatives dz/dx = 2, and dz/dy = 4, at (1,2,5). Is the point (3,6,6) on the tangent plane?
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Originally Posted by jenius If you have a surface with the partial derivatives dz/dx = 2, and dz/dy = 4, at (1,2,5). Is the point (3,6,6) on the tangent plane? the tangent plane here is: $\displaystyle z = 2x + 4y - 5$ does this plane contain (3,6,6)?
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