Talk:Critical point (mathematics)

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critical points of F(x,f(x))=1/2(f(x))^2+1/2x^2-1/6x^3 —The preceding unsigned comment was added by 69.155.40.117 (talk • contribs) .

When dF/dx = 0 i.e. f(x) df/dx + x - 1/2 x^2 =0 --Salix alba (talk) 16:19, 27 January 2006 (UTC)

[edit] Critical vs. Stationary

"It is also called a stationary point."

Isn't that only valid when the derivative is zero (i.e. and not when it is undefined, like the article suggests)? —The preceding unsigned comment was added by 87.194.47.191 (talk) 09:10, 24 February 2007 (UTC).