$\frac{d}{dx}\sqrt{1-x^2}$

$\left(2x^3-4+6x^2+5x\right)\left(4x^2+5-8x^3\right)$

$-\frac{60}{-5}$

$-3=\left(\frac{1}{2}\right)x$

$\int_{x^2}^{x^3}\left(x^{-2}\right)dx$

$\int_0^{\frac{7\sqrt{3}}{2}}\left(\frac{1}{\sqrt{49-x^2}}\right)dx$

$\int\frac{1}{t^3\sqrt{t^2-4}}dt$