$\frac{tan\theta\:\:+1}{tan\theta\:}=csc^2\theta\:$
$\int\left(\frac{x^3+x+1}{x^4+2x^2+1}\right)dx$
$1\cdot10^3+2\cdot10^2+3\cdot10^1+4\cdot10^0$
$f\left(x\right)=\log_{2}\left(\frac{x+6}{3}\right)$
$\int-\frac{1}{4}e^{-4x}\left(3x^2\right)dx$
$4a-7b+a+2b+8a$
$\left(4x^2-1\right)\left(64x^6+4x\:^2\:+16x\:^4+1\right)$
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