test mathjax in blogger

Maths between dollars is inline: $\sum_{k=1}^n k = \frac{n(n+1)}{2}$. Maths between slash-square-brackets is display: $$\sum_{k=1}^n k = \frac{n(n+1)}{2}$$

$\LaTeX$


REF : 用 MathJax 顯示數學符號－以 Blogger 為例

簡單範本可，動態範本不行