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共找到 1208 与5=An 相关的结果，耗时32 ms
在等差数列an中,已知a3=5,a1,a2,a5成等比数列,求数列an的通项公式.
数学
已知等比数列{an}为递增数列,a1×a5=16,a3+a5=5且求a10
数学
改被动语态 she is going to play the match today2.we saw a bus running towards us at that time 3.they elected her leader of the group 4.xiao
英语
liu has invite
1 He____ ____ ____(以前是)a history teacher in our school.英语高手来帮帮忙做下这5题2 There___ ___ ___(以前有)an old temple near the village.3 She___ ___
英语
___ ___(习惯于散步)
根据句意和首字母提示完成单词.1、what c___is your bird?it's white.2、an orange is o____.3、your flower is red and mine is y____.4、my car is b___.it's my
英语
favourite colo
1.she has two volleyballs.2.he has an apple.3.I have three bags4.I have a basret ball.5.They hacve two baseballs 该否定句、一般疑问句【用助动词问】、肯定回
英语
、否定回答
有一列数,A1,A2,A3,A4,A5,An其中A1=5x²+1,A2=5x³+2,A3=5x4次方+3,A4=5x5次方+4,A5=5x6次方+5当An=179时,n的值是
数学
有一列数a1,a2,a3,a4.an-1,an其中a1=5*2+1,a2=5*3+2,.当an=2009时,n等于多少?
数学
有一列数a1,a2,a3 ,a4,...,an,其中a1=6*2+1,a2=6*3+2,a3=6*4+3,a4=6*5+4...则弟n个数an=?.当an=2001时,n=?
数学
My brother ____(take)acting lessons next year because he wants to be an actor2 I ___(learn)to swim next year3 They ____(watch)a fashio
英语
show tomorrow
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