Mathematics
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Like to learn some math here and also to help people.

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5 How to determine whether a function is concave, convex, quasi-concave and quasi-convex Sep 5 '15
5 Proving that the sequence $\left \{ \frac{x_{n}}{y_{n}} \right \} \rightarrow \frac{x}{y}$ Sep 8 '18
5 Solving for $y'' - 4y' - 5y - 2 = 0$ Nov 28 '18
4 If $f$ is bijective then show it has a unique inverse $g$ Sep 16 '18
3 Find the intervals on which $f(x)=x + \frac{1}{x}$ is monotonically increasing and decreasing Jun 17 '17
3 Solve truth table task Feb 4 '18
3 Showing that $\mathbb{R}$ is a metric space with the metric $d(x,y)=|x-y|$ Sep 1 '15
3 Is $\left \{ x_{1}+y_{1},…, x_{n}+y_{n}\right \}$ a basis for $\mathbb{R}^{n}$? Sep 2 '15
3 Is the matrix $A$ positive (negative) (semi-) definite? Sep 3 '15
3 Brouwer's fixed point theorem Feb 14 '14
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