$3x+y-1=0$

$sin\:2x\:-\:sin\:x\:=\:0$

$\lim_{x\to\frac{\pi}{4}}\left(\frac{2sinx-\sqrt{2}}{2cosx-\sqrt{2}}\right)$

$\lim_{x\to16}\left(\frac{\frac{1}{\sqrt{x}}-\frac{1}{4}}{16-x}\right)$

$\int\left(x\cdot cos^{-1}\left(5x^2\right)\right)$

$\lim_{x\to\infty}\left(\frac{x^3-2x^2-7x+21}{x^6+1}\right)$

$\frac{-7mx^3y^{m-1}}{-8x^4y^2}$