$\int ba^{3z}dz$

$\int\frac{3}{\left(4x-1\right)x}dx$

$\left(4a\right)\left(a\right)$

$\frac{5x^2-38x+16}{x-7}$

$\lim_{x\to\infty}\left(x^2+e\right)^{\frac{1}{x}}$

$121-w^2$

$\lim_{x\to0}\left(\frac{\sin\left(3x\right)-cos\left(x\right)}{sin^2\left(x\right)}\right)$