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$\frac{d}{dx}\cos^{-1}\left(\frac{x+1}{x^2-3}\right)$
$\frac{a}{2}\sqrt[3]{128a^7}b^{11}$
$\left(-\frac{1}{9}\right)^0$
$x^2+3x=4$
$x\left(1+y^2\right)^{\frac{1}{2}}dx=y\left(1+x^2\right)^{\frac{1}{2}}=dy$
$\frac{5dw}{dt}=w+10$
$\sqrt[7]{5^7x^{15}y^{25}z^2}$
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