同學(xué),這道題實(shí)際上是非常簡(jiǎn)單滴...因?yàn)槟憬又鴮懴氯?所有數(shù)字依次是3,5,-5,-3,3,5,-5,-3,3.發(fā)現(xiàn)3,5,-5,-3形成了一個(gè)循環(huán)...55除以4,等于13余3,所以就是-5啦
Each even-numbered term is 2 more than the previous term意思就是每個(gè)偶數(shù)項(xiàng)都比前面的數(shù)大2,比如,5是第二項(xiàng),是偶數(shù)項(xiàng),所以他比3大2,-5是奇數(shù)項(xiàng),所以他是前面的數(shù),也就是5的-1倍,明白?
3,5,-5,…
3,5,-5,…
The first term in the sequence of numbers shown above is 3.Each even-numbered term is 2 more than the previous term and each odd-numbered term,after the first,is -1 times the previous term.For example,the second term is 3+2,and the third term is (-1)*5.What is the 55th term of the sequence?
A.-5 B.-3 C.-1 D.3 E.5
這道題目我不是很看得懂.額.Each even-numbered term is 2 more than the previous term這句
這題來自SAT OG P398 Q13
The first term in the sequence of numbers shown above is 3.Each even-numbered term is 2 more than the previous term and each odd-numbered term,after the first,is -1 times the previous term.For example,the second term is 3+2,and the third term is (-1)*5.What is the 55th term of the sequence?
A.-5 B.-3 C.-1 D.3 E.5
這道題目我不是很看得懂.額.Each even-numbered term is 2 more than the previous term這句
這題來自SAT OG P398 Q13
英語人氣：502 ℃時(shí)間：2020-05-03 20:28:21
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