C
the number of variations in sign的定義是那些相鄰(consecutive)兩項(xiàng)乘積為負(fù)的數(shù)的對(duì)數(shù)(pairs)
觀察知道1,-3; -3,2; 5,-4; 這三組數(shù)成立
一道GMAT數(shù)學(xué)題,求高人指教.
一道GMAT數(shù)學(xué)題,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
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
英語(yǔ)人氣：358 ℃時(shí)間：2020-02-06 10:44:55
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