皮皮学,免费搜题
登录
搜题
【简答题】
(本题满分16分) 设正项等差数列 的前 n 项和为 ,其中 . 是数列 中满足 的任意项. (1)求证: ; (2)若 也成等差数列,且 ,求数列 的通项公式; (3)求证: .
拍照语音搜题,微信中搜索
"皮皮学"
使用
参考答案:
参考解析:
知识点:
皮皮学刷刷变学霸
举一反三
【单选题】Suggesting something which he or she can do ______ the child's sense of achievement.
A.
adds to
B.
brings up
C.
pass on
D.
makes up
查看完整题目与答案
【单选题】Suggesting something which he or she can do_____the child's sense of achievement.
A.
makes up
B.
pass on
C.
brings up
D.
adds to
查看完整题目与答案
【简答题】四时田园杂兴(其三十一) 昼出耘田 ,村庄儿女各当家 。 ,也傍 学种瓜 。
查看完整题目与答案
【判断题】他人态度对消费者购买意向能否转换为购买行动会产生一定的影响。()
A.
正确
B.
错误
查看完整题目与答案
【多选题】培育和践行社会主义核心价值观,既要目标高远,保持定力、不懈奋进,又要脚踏实地,严于律己,精益求精,讲社会主义核心价值观转化为人生的价值准则,()。
A.
勤学以增智
B.
修德以立身
C.
明辨以正心
D.
笃实以为功
查看完整题目与答案
【单选题】Jack is among the brightest of his ( ): He can speak several foreign languages and has won three national prizes.
A.
honor
B.
ability
C.
generation
D.
edge
查看完整题目与答案
【单选题】不属于电子渠道中影响消费者购买意愿的因素是()。
A.
消费者自身因素
B.
消费者的风险感知能力
C.
产品类型
D.
电子销售网站的流量大小
查看完整题目与答案
【单选题】—Can we _______ ping-pong? —No,_______ tennis.A. play let's play B. plays let's pla
A.
8.—Can we _______ ping-pong? —No,_______ tennis. A. play let's play
B.
plays let's play
C.
play let's to play
D.
plays let's to play
查看完整题目与答案
【单选题】在CSS样式表中,设置页面背景图片,下列语法正确的是
A.
background:url(images/icon.jpg) left top no-repeat #CCCCCC;
B.
background:link(images/icon.jpg) left top no-repeat;
C.
background:url(images/icon.jpg) left top repeat_x;
D.
background:src(images/icon.jpg) left top repeat-x;
查看完整题目与答案
【单选题】Jack is among the brightest of his( ):He can speak several foreign languages and has won three national pries.
A.
honor
B.
ability
C.
generation
D.
edge
查看完整题目与答案
相关题目:
【单选题】Suggesting something which he or she can do ______ the child's sense of achievement.
A.
adds to
B.
brings up
C.
pass on
D.
makes up
查看完整题目与答案
【单选题】Suggesting something which he or she can do_____the child's sense of achievement.
A.
makes up
B.
pass on
C.
brings up
D.
adds to
查看完整题目与答案
【简答题】四时田园杂兴(其三十一) 昼出耘田 ,村庄儿女各当家 。 ,也傍 学种瓜 。
查看完整题目与答案
【判断题】他人态度对消费者购买意向能否转换为购买行动会产生一定的影响。()
A.
正确
B.
错误
查看完整题目与答案
【多选题】培育和践行社会主义核心价值观,既要目标高远,保持定力、不懈奋进,又要脚踏实地,严于律己,精益求精,讲社会主义核心价值观转化为人生的价值准则,()。
A.
勤学以增智
B.
修德以立身
C.
明辨以正心
D.
笃实以为功
查看完整题目与答案
【单选题】Jack is among the brightest of his ( ): He can speak several foreign languages and has won three national prizes.
A.
honor
B.
ability
C.
generation
D.
edge
查看完整题目与答案
【单选题】不属于电子渠道中影响消费者购买意愿的因素是()。
A.
消费者自身因素
B.
消费者的风险感知能力
C.
产品类型
D.
电子销售网站的流量大小
查看完整题目与答案
【单选题】—Can we _______ ping-pong? —No,_______ tennis.A. play let's play B. plays let's pla
A.
8.—Can we _______ ping-pong? —No,_______ tennis. A. play let's play
B.
plays let's play
C.
play let's to play
D.
plays let's to play
查看完整题目与答案
【单选题】在CSS样式表中,设置页面背景图片,下列语法正确的是
A.
background:url(images/icon.jpg) left top no-repeat #CCCCCC;
B.
background:link(images/icon.jpg) left top no-repeat;
C.
background:url(images/icon.jpg) left top repeat_x;
D.
background:src(images/icon.jpg) left top repeat-x;
查看完整题目与答案
【单选题】Jack is among the brightest of his( ):He can speak several foreign languages and has won three national pries.
A.
honor
B.
ability
C.
generation
D.
edge
查看完整题目与答案