Top network posts

• 42 Justify, without evaluating, that the determinant of the following matrix is zero
• 32 Helping students who make no effort to figure things out for themselves
• 30 Prove that the equation has only one real root.
• 21 Fun set theory for kids
• 18 How rigorous should high school calculus be?
• 15 why is the intersection of two sets with no common element equal to the subset containing the empty set and not simply the empty set?
• 10 Evaluate: $\lim\limits_{x \to \infty} (\sqrt{x+2}-\sqrt{x})$
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