2015年10月22日
摘要: \begin{array}{c} a_1x+b_1y+c_1z=d_1 \\ a_2x+b_2y+c_2z=d_2 \\ a_3x+b_3y+c_3z=d_3 \end{array} \begin{align}a^3+b^3&=c^3\end{align}\begin{align}a^2+b^2&=... 阅读全文
posted @ 2015-10-22 17:24 bleu_crystal 阅读(98) 评论(0) 推荐(0)
摘要: \begin{align}\displaystyle{\left \lbrace \sum_{i=0}^n i^2 = \frac{(n^2+n)(2n+1)}{6} \right\rbrace\tag{1.2}}\end{align} 阅读全文
posted @ 2015-10-22 17:13 bleu_crystal 阅读(108) 评论(0) 推荐(0)
摘要: \begin{align}a^2+b^2&=c^2\\\beta^2&=\sum_{n=0}^{\infty}{\frac{1}{n}}+\int_0^1{\frac{x}{e^x-1}dx}\end{align} 阅读全文
posted @ 2015-10-22 16:37 bleu_crystal 阅读(118) 评论(2) 推荐(0)
摘要: \begin{align}\left \lbrace \sum_{i=0}^n i^2 = \frac{(n^2+n)(2n+1)}{6} \right\rbrace\tag{1.2}\end{align}\begin{align}a^2+b^2&=c^2\\\beta^2&=\sum_{n=0}^... 阅读全文
posted @ 2015-10-22 16:20 bleu_crystal 阅读(112) 评论(2) 推荐(0)
摘要: \begin{align}\lbrace\sum_{i=0}^n i^2 = \frac{(n^2+n)(2n+1)}{6}\rbrace\tag{1.1}\end{align} 阅读全文
posted @ 2015-10-22 16:10 bleu_crystal 阅读(74) 评论(0) 推荐(0)