$$\lim_{x \to 0^-}\left(\frac{\left(2 x + \operatorname{atan}{\left(x \right)}\right) \left(- \cos{\left(2 x \right)} + \cos{\left(5 x \right)}\right)}{x}\right) = 0$$
Más detalles con x→0 a la izquierda$$\lim_{x \to 0^+}\left(\frac{\left(2 x + \operatorname{atan}{\left(x \right)}\right) \left(- \cos{\left(2 x \right)} + \cos{\left(5 x \right)}\right)}{x}\right) = 0$$
$$\lim_{x \to \infty}\left(\frac{\left(2 x + \operatorname{atan}{\left(x \right)}\right) \left(- \cos{\left(2 x \right)} + \cos{\left(5 x \right)}\right)}{x}\right) = \left\langle -4, 4\right\rangle$$
Más detalles con x→oo$$\lim_{x \to 1^-}\left(\frac{\left(2 x + \operatorname{atan}{\left(x \right)}\right) \left(- \cos{\left(2 x \right)} + \cos{\left(5 x \right)}\right)}{x}\right) = \frac{\pi \cos{\left(5 \right)}}{4} - \frac{\pi \cos{\left(2 \right)}}{4} + 2 \cos{\left(5 \right)} - 2 \cos{\left(2 \right)}$$
Más detalles con x→1 a la izquierda$$\lim_{x \to 1^+}\left(\frac{\left(2 x + \operatorname{atan}{\left(x \right)}\right) \left(- \cos{\left(2 x \right)} + \cos{\left(5 x \right)}\right)}{x}\right) = \frac{\pi \cos{\left(5 \right)}}{4} - \frac{\pi \cos{\left(2 \right)}}{4} + 2 \cos{\left(5 \right)} - 2 \cos{\left(2 \right)}$$
Más detalles con x→1 a la derecha$$\lim_{x \to -\infty}\left(\frac{\left(2 x + \operatorname{atan}{\left(x \right)}\right) \left(- \cos{\left(2 x \right)} + \cos{\left(5 x \right)}\right)}{x}\right) = \left\langle -4, 4\right\rangle$$
Más detalles con x→-oo