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# Lagrange multipliers watch

1. I'm not sure if this question has anything to do with it but I'm assuming it does. Find the minimum distance from the origin to the surface xyz=1. I tried using lagrange multipliers, i got the solutions and the value of lambda. Just a bit stuck and not sure what to do next.
2. (Original post by JBKProductions)
Find the minimum distance from the origin to the surface xyz=1. I tried using lagrange multipliers, i got the solutions and the value of lambda. Just a bit stuck and not sure what to do next.
Well, what values did you get?
3. (Original post by Miss Mary)
Well, what values did you get?
I got the solutions (1,1,1), (-1,1,-1), (-1,-1,1) and (1,-1,-1) and lambda as 2.
4. (Original post by JBKProductions)
I got the solutions (1,1,1), (-1,1,-1), (-1,-1,1) and (1,-1,-1) and lambda as 2.
Okay then, since the question says "find the minimum distance", and the distance from any point to the origin is given by , you can say that the minimum distance is . It's the same distance from any of your 3 points.

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Updated: March 26, 2011
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