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 Aug31 revised Verifying an error estimate on a multidimensional function using its jacobian corrected formatting Aug31 asked Verifying an error estimate on a multidimensional function using its jacobian Aug30 comment How do I obtain an appropriate energy functional from the weak formulation of a partial differential equation? Substituting v=u into the weak formulation accounts for most of the functional $F(u)$ except for the term $\frac{1}{2}au^2$. Where did the $\frac{1}{2}$ come from? Aug30 comment Applying a multidimensional variant of Taylor's Theorem Thanks so much, shoda! :) Aug30 accepted Applying a multidimensional variant of Taylor's Theorem Aug30 comment Applying a multidimensional variant of Taylor's Theorem @shoda: Yes, you are correct. In the process of copying and pasting, I neglected to change the limits. Thanks for the heads up! :) Aug30 revised Applying a multidimensional variant of Taylor's Theorem deleted 4 characters in body Aug30 asked Applying a multidimensional variant of Taylor's Theorem Aug27 asked Sufficiency to prove the convergence of a sequence using even and odd terms Aug23 revised Help solving differential equation Edited for easier readability Aug23 suggested approved edit on Help solving differential equation Aug23 comment Help solving differential equation There are a variety of ways to solve it. Are you looking for an analytical solution or a numerical one? Also, have you consulted any introductory ordinary differential equations books? This is a classic problem with well studied properties and I'm sure you can find more detailed information in a good undergraduate textbook. Aug18 revised Understanding how to state the Karush-Kuhn-Tucker Conditions for a given problem removed statement to reflect corrections made in original question Aug18 accepted Understanding how to state the Karush-Kuhn-Tucker Conditions for a given problem Aug18 suggested approved edit on Understanding how to state the Karush-Kuhn-Tucker Conditions for a given problem Aug17 revised Understanding how to state the Karush-Kuhn-Tucker Conditions for a given problem Corrected objective function according to published errata Aug17 comment Understanding how to state the Karush-Kuhn-Tucker Conditions for a given problem Actually, I just read the errata: users.eecs.northwestern.edu/~nocedal/book/2ndprint.pdf It says that $\frac{1}{8}$ should be replaced by $\frac{1}{2}$ in the objective function. I'll make the edit. Aug17 comment Understanding how to state the Karush-Kuhn-Tucker Conditions for a given problem You're right... I copied it from the text, so I guess there's a slight mistake there. Aug17 asked Understanding how to state the Karush-Kuhn-Tucker Conditions for a given problem Jun28 awarded Commentator