$3x^2+9y^2=27$
$w^2-4$
$\left(4a+3y-c+5\right)+\left(a-9\right)$
$\int x\cdot sin\left(\frac{x}{3}\right)$
$5sin\left(x+53.13^{\circ\:}\right)=1$
$f\left(x\right)=\frac{\log\left(x^2\right)}{x}$
$\int\frac{3x}{\sqrt{2-x^2}}dx$
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