$3x+1>1$
$\int_0^{15}\left(100\left(q+20\right)e^{-\left(0.2q+2\right)}-23.58\right)dq$
$2w+2x+2y+2z$
$5am-15am$
$cos2\left(\frac{3}{\sqrt{13}}\right)$
$-2\cdot4-18\cdot2-40$
$\int x\cdot e^{\frac{1}{3}x}dx$
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