SAT I 每日一问:2013年3月12日
作者:沪江英语
来源:CollegeBoard
2013-03-12 09:59
The Correct answer is B.
Explanation
You do not know the value of the term or the term of the sequence, but you do know the values of the , <, and terms. The correct formula must give as the value of the term, as the value of the term, and as the value of the term. Choice E, , gives , not , as the value of the term. Choice A, , gives , not , as the value of the term. Choice C, , gives , not , as the value of the term. Choice D, , gives , not , as the value of the term. This leaves choice B, , which gives the correct values for the , , and terms of the sequence.