1967 IMO Problems/Problem 5
Revision as of 22:57, 1 August 2020 by Catoptrics (talk | contribs) (Fixed problem and provided solution.)
Let 
be reals, not all equal to zero. Let ![\[c_n = \sum^8_{k=1} a^n_k\]](http://latex.artofproblemsolving.com/b/c/6/bc62323075b4e2015085cc7aa2e3364679d89ced.png)
for 
. Given that among the numbers of the sequence 
, there are infinitely many equal to zero, determine all the values of 
for which 
Solution
It can be found here [1]
