Ratkaise limit (as n approaches + infty) of (frac{r_{n}+1}{r_{n}-1})^cosn+r

$$\lim _ { n \rightarrow + \infty } ( \frac { r _ { n } + 1 } { r _ { n } - 1 } ) ^ { \cos n + r }$$

Laske

$$\text{Divergent}$$

Derivoi muuttujan r_n suhteen

$$\text{Indeterminate}$$