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 Mar 25 awarded Popular Question Oct 3 accepted Probability: student passing an exam by randomly guessing (no calculator) Sep 17 asked Probability: student passing an exam by randomly guessing (no calculator) Sep 10 accepted Distance of two vectors under L_inf norm Sep 10 asked Distance of two vectors under L_inf norm Feb 25 accepted Class divided into 5, probability of 2 people in the same team Feb 25 comment Class divided into 5, probability of 2 people in the same team ahhh okok yes it's 4/24. alright thanks! Feb 25 asked Class divided into 5, probability of 2 people in the same team Jan 28 accepted Relatively prime integers proof Jan 28 asked Relatively prime integers proof Oct 11 accepted Optimizing with Absolute Value Objective Function Oct 10 comment Optimizing with Absolute Value Objective Function Thanks for your answer! However, is there any way to solve this using just 1 linear programming problem? Oct 10 comment Optimizing with Absolute Value Objective Function no, but there's a hint saying: "Try breaking it into 2 linear programming problems. Then, could you think of combining them into just 1 problem?" Oct 10 asked Optimizing with Absolute Value Objective Function Sep 24 accepted Convex Set Proof Sep 23 asked Convex Set Proof Jun 21 awarded Organizer Jun 16 awarded Editor Jun 16 revised For invertible $M$, symmetric $N$, prove Prove that $M^TNM$ is positive definite if and only if $N$ is positive definite. edited title Jun 16 accepted For invertible $M$, symmetric $N$, prove Prove that $M^TNM$ is positive definite if and only if $N$ is positive definite.