$y^{\prime}=4e^{x+2y}$
$\tan\left(x\right)\cdot\cot\left(x\right)+\tan\left(x\right)=\sec^2x$
$\frac{1+cos\left(2b\right)}{sin\left(2b\right)}$
$x^{2x+2}$
$\frac{\csc\:^2\left(u\right)+\sec^2\left(u\right)}{\csc\:^2\left(u\right)\sec\:\left(u\right)}$
$\frac{2x^2-2}{x-1}$
$\left(27x^3-343\right)$
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