$\frac{d}{d\theta\:}\left(acscb\theta\:\right)$

$4u^2-5u=0$

$-38-2\cdot\left\{-5+6\cdot\left(-3+2\cdot7-1\cdot9\right)\right\}-4\cdot3$

$3x^2-12x+7=0$

$\frac{\cot\left(x\right)}{\sec\left(x\right)}+\sin\left(x\right)=\csc\left(x\right)$

$\frac{d^2}{dx^2}\left(x^2+2xy-y^2=1\right)$

$243=m^{\frac{5}{4}}$