Talk:Second partial derivative test

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Mathematics rating:	Stub Class	Mid Priority	Field: Analysis
Please update this rating as the article progresses, or if the rating is inaccurate. Click to show/hide comments. Please add to or update the comments to suggest improvements to the article. Needs references and encyclopedic approach. Geometry guy 22:04, 11 July 2007 (UTC)

"don't overdo it"? lame... —Preceding unsigned comment added by 82.81.248.49 (talk) 19:15, 3 November 2007 (UTC)

[edit] The geometric Interpretation of the determinant

I’d wonder what geometric interpretation the determinant has in this case. Does it even have one? Suppose we have a function in which M > 0 and f_xx < 0 for all (x,y), then there can only exist one maximum? - Or can one conclude this one the basis of M > 0 alone? Perhaps this should be further explained in the article!?. Sorry for the bad English! --83.72.7.63 (talk) 14:19, 14 January 2008 (UTC)