$\tan\left(\frac{x}{2}\right)+\cos\left(x\right)\tan\left(\frac{x}{2}\right)=\sin\left(x\right)$

$\frac{d}{dx}\left(9^{12x}+2x^9-e^{9x}\right)$

$6.4\cdot5$

$3\left(2x+8\right)-2x$

$\left(1.01\right)^6-\left(1.01\right)^5-\left(1.01\right)^4+\left(1.01\right)^3-\left(1.01\right)^2+1.01-1$

$\frac{d^2}{dx^2}\left(2tanx-2secx\right)$

$\frac{dy}{dx}\left(\frac{y}{x}-5x^3=5\right)$