please-help-me-u-1-a-u-2-b-u-n-2-3-u-n-1-1-5-13-u-n-1-5-n-N-show-that-u-n-have-limit-and-find-its-limit-

Question Number 49326 by Saorey last updated on 05/Dec/18

please help me!

{\begin{cases} u_{1} = a, u_{2} = b \\ u_{n + 2} = 3 \sqrt[5]{u_{n + 1}} + 13 \sqrt[5]{u_{n}}, n \in N^{*} \end{cases}

show that (u_{n}) have limit and find

its limit .