For a finite sequence of nonzero numbers, the number of variations in sign is definded as the number of pairs of consecutive terms of the sequence for which the product of the 2 consecutive terms is negative.
what is the number of variation in sign for the sequence 1, -3, 2, 5, -4, -6.
请问这个题目的确切含意和解题思路?
如果 "consecutive terms of the sequence " 意味着数集应表示为 -6 -4 -3 1 2 5
只有一对(-3 1)
欢迎光临 国际顶尖MBA申请交流平台--TOPWAY MBA (http://forum.topway.org/) | Powered by Discuz! 7.2 |