$\frac{1-sin\left(x\right)}{tan\left(x\right)sec\left(x\right)}$
$\frac{dy}{dx}\left(x^3-2x^2y+3xy^2=38\right)$
$3\sqrt{x}=9$
$\left(3x^2-4x+8\right)-\left(5x+6\right)$
$\left(-10^8\right)$
$sin\left(13x\right)\:=-0,02$
$9\cdot9\cdot9^{2}$
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