这是一个等比数列,第一项a1是2,an=-2a(n-1)
问在前50项中,有多少项是小于100的?
6+22=28
The first term of the squence above is 2,and every term afte
1个回答
相关问题
-
英语翻译b)the terms of the MPOTC,then the terms stated above and
-
3,5,-5,…The first term in the sequence of numbers shown abov
-
It is the first day of the new term.
-
It is ____ first day of the new term. [
-
Find and simplify the first four terms in the expansion of (
-
Every word is a term,the term is not in time,but in the limi
-
英语翻译The sum of the first 5 terms of anarithmetic series is 8
-
lt is the first day of the new term中间为什么要加the
-
the day this it is first term of(连词成句)
-
Find the first three terms in the expansion of