$\frac{du}{dt}=\frac{t^2+1}{u^2+1}$

$+1a^2-3a+3a-9$

$\frac{1}{2}\log\left(25\right)+\log\left(20\right)$

$\left(\frac{dy}{dx}\cdot x\right)-\left(x\cdot y\right)-\left(e^x\right)=0$

$y'=\frac{6x+3xy^2}{x^2y+y}$

$\frac{\cos\left(x\right)\left(1+\tan\left(x\right)\right)}{\sin\left(x\right)}\sin\left(x\right)$

$2x-5\ge3$