$\int_{-1}^2\left(\frac{9x^3+3x^5-8}{x^2}\right)dx$
$\lim_{x\to79.123}\left(\csc x\right)$
$\frac{\cos\:\left(8x\right)+\cos\:\left(6x\right)}{\sin\:\left(8x\right)+\sin\:\left(6x\right)}$
$\int\left(\frac{\sqrt{x^2+64}}{7x^2}\right)dx$
$\left(+3\right)+\left(+1\right)-\left(-4\right)$
$26+-9+17$
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