soit {_(r_(n+1) =r_n /(2+r_n ^2 )) ^(r_0 =1)
demontrer sans recurrence que r_n >0
demontrer par recurrence que r_(n+1) ≤(1/2)r_n
demontrer sans recurrence que r_n ≤((1/2))^n
•erly rolvinst•
Let ξ be a positive Root of x^2 −2023x−1
Define a sequence ϕ_i such That ϕ_0 =1
ϕ_(n+1) =⌊ϕ_n ξ⌋, find The Remainder When ϕ_(2023 ) is divided by (√ϕ_2 )