$\csc^2ydx=\csc xdy$

$0846\cdot59$

$\int\sec\left(t\right)\left(3\sec\left(t\right)+5tan\left(t\right)\right)dt$

$6\tan\left(30\right)-4\sin\left(60\right)+2\cot\left(45\right)$

$u=\ln\left(x\right)+y^3$

$\frac{cos\left(u\right)sec\left(u\right)}{tan\left(u\right)}=cot\left(u\right)$

$\frac{dy}{dx}x=8x^4-4y$