For a finite sequence of nonzero numbers, the number of variations in sign is defined as the number of pairs of consecutive of terms of the sequence for which the product of the two consecutive terms is negative. What is the number of variations in sign for the sequence 1 -325-4-6
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2008-6-5 08:16:00
楼主