$$\lim_{n \to \infty}\left(\frac{\sqrt{n} \left(n^{2} + 5\right)^{4} \left|{\frac{\pi \cos{\left(n \right)} + 2}{\pi \cos{\left(n + 1 \right)} + 2}}\right|}{\sqrt{n + 1} \left(\left(n + 1\right)^{2} + 5\right)^{4}}\right) = 1$$
$$\lim_{n \to 0^-}\left(\frac{\sqrt{n} \left(n^{2} + 5\right)^{4} \left|{\frac{\pi \cos{\left(n \right)} + 2}{\pi \cos{\left(n + 1 \right)} + 2}}\right|}{\sqrt{n + 1} \left(\left(n + 1\right)^{2} + 5\right)^{4}}\right) = 0$$
Más detalles con n→0 a la izquierda$$\lim_{n \to 0^+}\left(\frac{\sqrt{n} \left(n^{2} + 5\right)^{4} \left|{\frac{\pi \cos{\left(n \right)} + 2}{\pi \cos{\left(n + 1 \right)} + 2}}\right|}{\sqrt{n + 1} \left(\left(n + 1\right)^{2} + 5\right)^{4}}\right) = 0$$
Más detalles con n→0 a la derecha$$\lim_{n \to 1^-}\left(\frac{\sqrt{n} \left(n^{2} + 5\right)^{4} \left|{\frac{\pi \cos{\left(n \right)} + 2}{\pi \cos{\left(n + 1 \right)} + 2}}\right|}{\sqrt{n + 1} \left(\left(n + 1\right)^{2} + 5\right)^{4}}\right) = \frac{8 \sqrt{2} \pi \cos{\left(1 \right)} + 16 \sqrt{2}}{81 \pi \cos{\left(2 \right)} + 162}$$
Más detalles con n→1 a la izquierda$$\lim_{n \to 1^+}\left(\frac{\sqrt{n} \left(n^{2} + 5\right)^{4} \left|{\frac{\pi \cos{\left(n \right)} + 2}{\pi \cos{\left(n + 1 \right)} + 2}}\right|}{\sqrt{n + 1} \left(\left(n + 1\right)^{2} + 5\right)^{4}}\right) = \frac{8 \sqrt{2} \pi \cos{\left(1 \right)} + 16 \sqrt{2}}{81 \pi \cos{\left(2 \right)} + 162}$$
Más detalles con n→1 a la derecha$$\lim_{n \to -\infty}\left(\frac{\sqrt{n} \left(n^{2} + 5\right)^{4} \left|{\frac{\pi \cos{\left(n \right)} + 2}{\pi \cos{\left(n + 1 \right)} + 2}}\right|}{\sqrt{n + 1} \left(\left(n + 1\right)^{2} + 5\right)^{4}}\right) = 1$$
Más detalles con n→-oo