Resolve-1-u-n-3u-n-1-12-3-4-n-2-u-n-2u-n-1-5cos-n-3-u-o-1-3-u-n-u-n-1-u-n-2-2sin-n-3-with-u-o-1-u-1-2-

Question Number 159881 by LEKOUMA last updated on 22/Nov/21

R e s o l v e

1 . u_{n} - 3 u_{n - 1} = 12 {(\frac{3}{4})}^{n}

2 . u_{n} = 2 u_{n - 1} + 5 \cos (\frac{n Π}{3}), u_{o} = 1

3 . u_{n} = u_{n - 1} - u_{n - 2} + 2 \sin (\frac{n Π}{3})

w i t h u_{o} = 1, u_{1} = 2