一道GMAT数学题,求高人指教.For a finite sequence of nonzero numbers,the number of variations in sign is defined as the number of pairs of consecutive terms of the sequence for which the product of the two consecutive terms is negative.What i

来源：学生作业帮助网编辑：作业帮时间：2024/05/11 05:59:06

一道GMAT数学题,求高人指教.For a finite sequence of nonzero numbers,the number of variations in sign is defined as the number of pairs of consecutive terms of the sequence for which the product of the two consecutive terms is negative.What i
一道GMAT数学题,求高人指教.
For a finite sequence of nonzero numbers,the number of variations in sign is defined as the number of pairs of consecutive 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,-3,2,5,-4,-6
(A) One
(B) Two
(C) Three
(D) Four
(E) Five

一道GMAT数学题,求高人指教.For a finite sequence of nonzero numbers,the number of variations in sign is defined as the number of pairs of consecutive terms of the sequence for which the product of the two consecutive terms is negative.What i
C
the number of variations in sign的定义是那些相邻(consecutive)两项乘积为负的数的对数(pairs)
观察知道1,-3; -3,2; 5,-4; 这三组数成立

简而言之：求数列：1，-3，2，5，-4，-6中共有几组相邻两个数的乘积是负数。答案显而易见，(C)不解释。

求高人指教数学题,谢谢一道GMAT数学题,求高人指教.For a finite sequence of nonzero numbers,the number of variations in sign is defined as the number of pairs of consecutive terms of the sequence for which the product of the two consecutive terms is negative.What i GMAT一道数学题, 一道GMAT的数学题一道关于GMAT的数学题一道高一上学期生物题,求高人指教. 求高人指教GMAT算分问题数学一共错两个,语文错十个,大概总分有多少?如果数学不错,GMAT的算分很BT啊～ GMAT语法问题,求高人指点. 问一道GMAT的数学题2^x-2^x-2=3(2^13)求X 一道数学题,求学霸指教! 杨鹏老师的《GRE&GMAT阅读难句教程》能用于提高平时阅读文章和报刊的阅读能力吗?求高人指教. 数学题,大神,求指教. 数学题求高人,求详解~ 求高人指教一二,附图一张, 六七题- - 物理~ 求高人指教求!爱尔翻译成英文名,请高人指教! 这啥成语?求高人指教. 数学题求高人指点!谢谢