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| \textstyle \frac{x}{y} \frac{x}{y}
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| \textstyle \sum_x^n \sum_{x=1}^{n}
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| \textstyle \prod_x^n \prod^{x=1}_{n}
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| \textstyle \int_a^b \int_{a}^{b} f (x)\,dx
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| \textstyle \frac{\partial x}{\partial y} \frac{\partial x}{\partial y}
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| \textstyle \sqrt x \sqrt{x}
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| \textstyle \sqrt[3]{x} \sqrt[3]{x}
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| \textstyle f(x) f(x)
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| \lim \lim_{x\to\infty}
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| *** ***
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| \sin \sin (x)
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| \cos \cos (x)
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| \tan \tan (x)
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| \log \log (x)
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| \ln \ln (x)
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| *** ***
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| \le \le
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| \ge \ge
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| \neq \neq
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| \approx \approx
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| \equiv \equiv
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| \propto \propto
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| \infty \infty
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| *** ***
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| \alpha \alpha
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| \beta \beta
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| \gamma \gamma
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| \delta \delta
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| \epsilon \epsilon
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| \zeta \zeta
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| \eta \eta
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| \theta \theta
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| \vartheta \vartheta
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| \kappa \kappa
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| \lambda \lambda
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| \mu \mu
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| \xi \xi
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| \pi \pi
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| \rho \rho
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| \sigma \sigma
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| \tau \tau
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| \phi \phi
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| \varphi \varphi
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| \chi \chi
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| \psi \psi
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| \omega \omega
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| *** ***
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| \Rightarrow \Rightarrow
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| \rightarrow \rightarrow
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| \Leftarrow \Leftarrow
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| \leftarrow \leftarrow
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| \Leftrightarrow \Leftrightarrow
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| \vec{x} \vec{x}
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| *** ***
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| ( \left(
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| ) \right)
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| [ \left[
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| ] \right]
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| \{ \left{
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| \} \right}
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| \textstyle {n \choose k} {n \choose k}
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| *** ***
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| \Box \Box
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| \forall \forall
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| \exists \exists
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| \in \in
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| \not\in \not\in
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| *** ***
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| \mbox{Taylor} f(x) = \sum_{k=0}^{\infty } \frac{ f^{k} (a) }{ k! } (x - a)^k
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| \mbox{Euler}^1 e^{i \varphi } := \cos \varphi + i \sin \varphi
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