代码测试

#include <stdio.h>

int main(void) {
    printf("Hello, world!\n");
    return 0;
}

Markdown测试

引用

语法

强|调|语|法

Notice测试

公式测试

$$ \begin{aligned} \int_{-\infty}^{\infty} e^{-x^2} , dx = \sqrt{\pi} \sum_{n=1}^{\infty} \frac{1}{n^2} = \frac{\pi^2}{6} \lim_{x \to 0} \frac{\sin(x)}{x} = 1 \end{aligned} $$ $$ \begin{aligned} \text{矩阵: } \begin{pmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{pmatrix} \end{aligned} $$ $$ \begin{aligned} \text{向量: } \ \vec{a} = \begin{pmatrix} a_1 \\ a_2 \\ a_3 \end{pmatrix} \end{aligned} $$ $$ \begin{aligned} \text{微分方程: } \frac{d^2 y}{dx^2} + \omega^2 y = 0 \end{aligned} $$ $$ \begin{aligned} \text{复数: } z = a + bi \end{aligned} $$ $$ \begin{aligned} \text{极限: } \lim_{n \to \infty} \left(1 + \frac{1}{n}\right)^n = e \end{aligned} $$ $$ \begin{aligned} \text{积分: } \int_0^1 x^2 , dx = \frac{1}{3} \end{aligned} $$ $$ \begin{aligned} \text{求和: } \sum_{k=1}^n k = \frac{n(n+1)}{2} \end{aligned} $$ $$ \begin{aligned} \text{乘积: } \prod_{i=1}^n i = n! \end{aligned} $$ $$ \begin{aligned} \text{集合: } A \cup B = { x \mid x \in A \text{ 或 } x \in B } \end{aligned} $$ $$ \begin{aligned} \text{逻辑: } \forall x \in \mathbb{R}, \exists y \in \mathbb{R} \text{ 使得 } x + y = 0 \end{aligned} $$ $$ \begin{aligned} \text{希腊字母: } \begin{matrix} \alpha & \beta & \gamma & \delta & \epsilon \\ \zeta & \eta & \theta & \iota & \kappa \\ \lambda & \mu & \nu & \xi & \pi \\ \rho & \sigma & \tau & \upsilon & \phi \\ \chi & \psi & \omega & \cdots & \cdots \end{matrix} \end{aligned} $$

好看的图图（作者: 藤ちょこ）