$1-c^2$

$\int\tan\left(4x\right)^2\cos\left(4x\right)^4dx$

$4+\frac{k}{2}=-3$

$\frac{sin\left(4t\right)-sin\left(2t\right)}{cos\left(4t\right)+cos\left(2t\right)}=\tan\left(x\right)$

$\int e^{5x-3}dx$

$\int\frac{e^{3x}}{\left(e^{3x}-4\right)^4}dx$

$-6\left(2p-3\right)+p$