$\int_{1+j}^{3+3j}\left(z\right)dz$
$x^4-4$
$7-2,2-2,3$
$\int\frac{\sqrt{1-x^2\:}}{x^4}dx$
$\frac{d}{dy}\:xy+\frac{y^2}{x^2}$
$\left(5x^2-3x\right)\left(5x^2+3x\right)$
$y''-\left(1+x\right)y$
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