数学式

$$x + y = 1$$

$$ x – y = 1 $$

$$ x \pm y = 1 $$

$$ {x}\times{y} = 1 $$

$$ {x}\div{y} = 1 $$

$$ \frac{x}{y} = 1 $$

$$ \sqrt{x} $$

$$ x^n + y^n = z^n $$

$$ \sum_{n=1}^{m}n =  \frac{(m+1)m}{2} $$

$$ {\int_{a1}^{b1} f(x) dx} = 1 $$

$$ X, dB = 20 \log_{10} {\frac{P1}{P0}} $$

$$ e = \lim_{n \to +\infty} \biggl( 1+\frac{1}{n} \biggl)^{n} $$

$$ x \pm y = 1 $$

$$x= \frac{1}2 a t^2+v_0 t+x_0$$

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