Hello World!
\(\color{purple}{markdown\text{入门笔记}}\)
字体
\({\tt for(int\ i=1;i<=n;++i)}\)
\({\rm for(int\ i=1;i<=n;++i)}\)
对数
\(\rm{log}_{2}n\)
组合数
\(C_{n}^{m}=\binom{n}{m}=\frac{n!}{m!(n-m)!}\)
排列
\(A_{n}^{m}=\frac{n!}{(n-m)!}\)
常用符号
\(10\%, <, >, \leq, \geq, \neq, \in, \subset, \Leftrightarrow\)
大公式
\[f(x) = \sum_{i = 0}^{n} \frac{f^{(i)}(x_0) \times (x - x_0)^i}{i!}
\]
\[f(n) = \sum_{i = 0}^{n} \binom{n}{i} g(i) \Rightarrow g(n) = \sum_{i = 0}^n (-1)^{n-i}\binom{n}{i}f(i)
\]
\[f(n) = \prod_{i = 0}^{n} g(i)
\]
\[\varphi(n) = \sum_{S \subseteq \{p_1, p_2, \cdots, p_k\}}(-1)^{|S|}\frac{n}{\prod_{p_i \in S}p_i}
\]
\[\begin{aligned}f(n) &= 1 + 2 + \cdots + n\\ &= \frac{n(n+1)}{2}\end{aligned}
\]
乘除
\(2 \times 3 \div 2\)
颜色
\(\color{red}{a}\color{green}{a}\color{yellow}{a}\color{olive}{a}\color{blue}{a}\color{purple}{a}\)
其他
你太骚了。
放代码
for (int i = 1; i <= n; ++i) {
a += 1;
}
引用
知识就是力量！
