Cách gõ $\LaTeX$:Bạn chỉ cần tru cập vào trang:https://www.codecogs.com/latex/eqneditor.php sau đó gõ các công thức Toán Học,Hóa Học,Vật Lý mà bạn muốn rồi copy về Diễn đàn nhớ là kẹp công thức giữa dấu $$ nhé

$\dfrac{a}{b+c}$

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$\dfrac{a}{b+c}$


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$a^2 + b_i^3 \ge c_{i+1}^5 + d_{x+1}^{y+1}$

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$\sqrt{a+b^2}$


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$\sqrt[n]{a+b}$


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$\displaystyle\sum_{k=1}^n \frac{1}{k^2}$


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$$\sum_{k=1}^n \frac{1}{k^2}$$


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$\displaystyle\lim_{x \rightarrow 0} \frac{\sin x}{x}=1$


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$$\lim_{x \rightarrow 0} \frac{\sin x}{x}=1$$


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$\displaystyle\lim_{n \to \infty}\sum_{k=1}^n \frac{1}{k^2} = \frac{\pi^2}{6}$


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$$\lim_{n \to \infty} \sum_{k=1}^n \frac{1}{k^2} = \frac{\pi^2}{6}$$


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$\displaystyle\int_{0}^{\pi/2} f(x)dx$


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$$\int_{0}^{\frac{\pi}{2}} f(x)dx$$


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$\underbrace{ a+b+\cdots+z }_{26}$


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$x\equiv a \pmod{b}$


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$1 + \left( \dfrac{1}{1-x^2} \right)^3$

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$\left\{\begin{array}{l}x+y = 1 \\x - y =1 \end{array}\right.$


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$\left[\begin{array}{l}x+y = 1 \\x - y =1 \end{array}\right.$


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$\mathbf{X}=\left( \begin{array}{ccc}x_{11} & x_{12} & \ldots \\ x_{21} & x_{22} & \ldots \\ \vdots & \vdots & \ddots \end{array} \right)$