$\frac{\tan\left(y\right)}{\sin\left(2x\right)}y'-\frac{\cos\left(x\right)}{\sec\left(y\right)}=0$

$37+61$

$2.4+\left(-2.73\right)+\left(-5.09\right)$

$f\left(x\right)=\left(3x-9\right)\left(x-6\right)$

$\frac{e^x-e^{-x}}{e^x+e^x}$

$cot^4x-\csc^4x=1-2csc^2x$

$\frac{dy}{dx}+\sqrt{\frac{1-y\left(2\right)}{1-x^2}}=0$