已知复数z1满足:(1+2i).z1=4+3i,zn+1-zn=
发布网友
发布时间:2024-10-19 09:27
我来回答
共2个回答
热心网友
时间:2024-11-04 03:47
(1)设z1=a+bi(a,b∈R),则z1=a-bi
(1+2i)(a-bi)=4+3i
a+2b+(2a-b)i=4+3i
a+2b=42a?b=3
解得:a=2b=1
∴z1=2+i
(2)由zn+1-zn=2+2i(n∈N*)得:
z2-z1=2+2i
z3-z2=2+2i
z4-z3=2+2i
…
zn-zn-1=2+2i(n∈z,n≥2)
累加得zn-z1=2(n-1)+(n-1)i(n∈N*)
zn=2n+(2n-1)i(n∈N*)
|zn|=4n2+(2n?1)2=8n2?4n+1
令|zn|≤13,即8n2-4n+1≤169
2n2-n-42≤0
∴1?已赞过已踩过你对这个回答的评价是?评论收起 // 高质or满意or特型or推荐答案打点时间 window.iPerformance && window.iPerformance.mark('c_best', +new Date); F.context('answers')['3423273043'] = {uid:"4775837714",imId:"public.1.b5ba460.mlcTJeqzDGN6i_qPANLe6w",id:"3423273043",userName:"释莉翦攸然",userNameEnc:"%E9%87%8A%E8%8E%89%E7%BF%A6%E6%94%B8%E7%84%B6",user:{sex:"1",iconType:"6",gradeIndex:"15",grAnswerNum:"989",isAuth:"0",authTitle:"",isUserAdmin:"0",userAdminLevel:"",userAdminTitle:"",userAdminType:"",isFamous:"0",isMaster:"0",goodRate:"33"},isAnonymous:"0",isCurrentUser:"0",mapUrl:"",refer:"",replyAskNum:"",threadId:"13693092173",hasComment:"0",qid:"809201490281029412",raid:"",recommendCanceled:"0"}; F.context('answers')['3423273043']['c_timestamp'] = '1583658124'; F.context('answers')['3423273043'].encodeUid = '12804069236f25705e79ga91c01000000'; F.context('answers')['3423273043'].ext_pack = {"dynamic_optime":"1635223985","dynamic_score_detail":"{\"qua_score\":2237,\"time_score\":\"-20\",\"ide_score\":\"40\",\"pre_score\":0}","ignore_spam":"15","mode_begintime":"0","mode_qtype":"0","op_uid":"0","partner":"0"}; F.context('answers')['3423273043'].bit_pack = {"is_recommend":"0","wap_flag":"0","is_pic_contained":"0","media_flag":"0","help_flag":"0","anonymous":"0","is_really_anonymous":"0","level_new":"1","comment_flag":"0","in_mis":"0","auto_recommend":"0","content_rich_flag":"0","prior_flag":"0","hidden_flag":"0","rec_canceled_flag":"0","mis_flag":"0","file_flag":"0","read_flag":"0","is_challenge":"0","ikaudio_flag":"0","mavin_flag":"0","is_delete_lock":"0","authentic_state":"0","is_compulsory_best":"0","dynamic_stick_flag":"0","video_flag":"0","vote_affirmative":"0","vote_negative":"0","is_video":"0","is_baiduyun":"0","is_yike_card":"0","is_baidumap":"0","is_note":"0"}; 释莉翦攸然
2020-03-08·TA获得超过3847个赞知道大有可为答主回答量:3098采纳率:31%帮助的人:400万我也去答题访问个人页关注展开全部解:(1)设z1=a+bi(a,b∈R),则z1=a-bi
(1+2i)(a-bi)=4+3i
a+2b+(2a-b)i=4+3i
a+2b=42a-b=3
解得:a=2b=1
∴z1=2+i
(2)由zn+1-zn=2+2i(n∈N*)得:
z2-z1=2+2i
z3-z2=2+2i
z4-z3=2+2i
…
zn-zn-1=2+2i(n∈z,n≥2)
累加得zn-z1=2(n-1)+(n-1)i(n∈N*)
zn=2n+(2n-1)i(n∈N*)
|zn|=4n2+(2n-1)2=8n2-4n+1
令|zn|≤13,即8n2-4n+1≤169
2n2-n-42≤0
∴1-1+8×424≤n≤1+1+8×424<5
∴n的最大整数取值是4.已赞过已踩过你对这个回答的评价是?评论收起推荐律师服务:若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询为你推荐:特别推荐癌症的治疗费用为何越来越高?新生报道需要注意什么?“网络厕所”会造成什么影响?华强北的二手手机是否靠谱?百度律临—免费法律服务推荐超3w专业律师,24H在线服务,平均3分钟回复免费预约随时在线律师指导专业律师一对一沟通完美完成等你来答换一换帮助更多人下载百度知道APP,抢鲜体验使用百度知道APP,立即抢鲜体验。你的手机镜头里或许有别人想知道的答案。扫描二维码下载×个人、企业类侵权投诉违法有害信息,请在下方选择后提交
类别
色情低俗涉嫌违法犯罪时政信息不实垃圾广告低质灌水
我们会通过消息、邮箱等方式尽快将举报结果通知您。
说明
0/200
提交取消领取奖励
我的财富值
0
兑换商品
--
去登录
我的现金
0
提现
下载百度知道APP
在APP端-任务中心提现
我知道了
--
去登录做任务开宝箱
累计完成
0
个任务
10任务
略略略略…
50任务
略略略略…
100任务
略略略略…
200任务
略略略略…
任务列表加载中...新手帮助如何答题获取采纳使用财富值玩法介绍知道商城合伙人认证
您的账号状态正常
感谢您对我们的支持
投诉建议意见反馈账号申诉非法信息举报
京ICP证030173号-1 京网文【2023】1034-029号 ©2024Baidu 使用百度前必读 |知道协议| 企业推广
辅 助
模 式
var _hmt = _hmt || []; (function() { var hm = document.createElement("script"); hm.src = "https://hm.baidu.com/hm.js?6859ce5aaf00fb00387e6434e4fcc925"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(hm, s); })(); window.tt = 1730663448;
热心网友
时间:2024-11-04 03:48
解:(1)设z1=a+bi(a,b∈R),则z1=a-bi
(1+2i)(a-bi)=4+3i
a+2b+(2a-b)i=4+3i
a+2b=42a-b=3
解得:a=2b=1
∴z1=2+i
(2)由zn+1-zn=2+2i(n∈N*)得:
z2-z1=2+2i
z3-z2=2+2i
z4-z3=2+2i
…
zn-zn-1=2+2i(n∈z,n≥2)
累加得zn-z1=2(n-1)+(n-1)i(n∈N*)
zn=2n+(2n-1)i(n∈N*)
|zn|=4n2+(2n-1)2=8n2-4n+1
令|zn|≤13,即8n2-4n+1≤169
2n2-n-42≤0
∴1-1+8×424≤n≤1+1+8×424<5
∴n的最大整数取值是4.
热心网友
时间:2024-11-04 03:44
(1)设z1=a+bi(a,b∈R),则z1=a-bi
(1+2i)(a-bi)=4+3i
a+2b+(2a-b)i=4+3i
a+2b=42a?b=3
解得:a=2b=1
∴z1=2+i
(2)由zn+1-zn=2+2i(n∈N*)得:
z2-z1=2+2i
z3-z2=2+2i
z4-z3=2+2i
…
zn-zn-1=2+2i(n∈z,n≥2)
累加得zn-z1=2(n-1)+(n-1)i(n∈N*)
zn=2n+(2n-1)i(n∈N*)
|zn|=4n2+(2n?1)2=8n2?4n+1
令|zn|≤13,即8n2-4n+1≤169
2n2-n-42≤0
∴1?已赞过已踩过你对这个回答的评价是?评论收起 // 高质or满意or特型or推荐答案打点时间 window.iPerformance && window.iPerformance.mark('c_best', +new Date); F.context('answers')['3423273043'] = {uid:"4775837714",imId:"public.1.b5ba460.mlcTJeqzDGN6i_qPANLe6w",id:"3423273043",userName:"释莉翦攸然",userNameEnc:"%E9%87%8A%E8%8E%89%E7%BF%A6%E6%94%B8%E7%84%B6",user:{sex:"1",iconType:"6",gradeIndex:"15",grAnswerNum:"989",isAuth:"0",authTitle:"",isUserAdmin:"0",userAdminLevel:"",userAdminTitle:"",userAdminType:"",isFamous:"0",isMaster:"0",goodRate:"33"},isAnonymous:"0",isCurrentUser:"0",mapUrl:"",refer:"",replyAskNum:"",threadId:"13693092173",hasComment:"0",qid:"809201490281029412",raid:"",recommendCanceled:"0"}; F.context('answers')['3423273043']['c_timestamp'] = '1583658124'; F.context('answers')['3423273043'].encodeUid = '12804069236f25705e79ga91c01000000'; F.context('answers')['3423273043'].ext_pack = {"dynamic_optime":"1635223985","dynamic_score_detail":"{\"qua_score\":2237,\"time_score\":\"-20\",\"ide_score\":\"40\",\"pre_score\":0}","ignore_spam":"15","mode_begintime":"0","mode_qtype":"0","op_uid":"0","partner":"0"}; F.context('answers')['3423273043'].bit_pack = {"is_recommend":"0","wap_flag":"0","is_pic_contained":"0","media_flag":"0","help_flag":"0","anonymous":"0","is_really_anonymous":"0","level_new":"1","comment_flag":"0","in_mis":"0","auto_recommend":"0","content_rich_flag":"0","prior_flag":"0","hidden_flag":"0","rec_canceled_flag":"0","mis_flag":"0","file_flag":"0","read_flag":"0","is_challenge":"0","ikaudio_flag":"0","mavin_flag":"0","is_delete_lock":"0","authentic_state":"0","is_compulsory_best":"0","dynamic_stick_flag":"0","video_flag":"0","vote_affirmative":"0","vote_negative":"0","is_video":"0","is_baiduyun":"0","is_yike_card":"0","is_baidumap":"0","is_note":"0"}; 释莉翦攸然
2020-03-08·TA获得超过3847个赞知道大有可为答主回答量:3098采纳率:31%帮助的人:400万我也去答题访问个人页关注展开全部解:(1)设z1=a+bi(a,b∈R),则z1=a-bi
(1+2i)(a-bi)=4+3i
a+2b+(2a-b)i=4+3i
a+2b=42a-b=3
解得:a=2b=1
∴z1=2+i
(2)由zn+1-zn=2+2i(n∈N*)得:
z2-z1=2+2i
z3-z2=2+2i
z4-z3=2+2i
…
zn-zn-1=2+2i(n∈z,n≥2)
累加得zn-z1=2(n-1)+(n-1)i(n∈N*)
zn=2n+(2n-1)i(n∈N*)
|zn|=4n2+(2n-1)2=8n2-4n+1
令|zn|≤13,即8n2-4n+1≤169
2n2-n-42≤0
∴1-1+8×424≤n≤1+1+8×424<5
∴n的最大整数取值是4.已赞过已踩过你对这个回答的评价是?评论收起推荐律师服务:若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询为你推荐:特别推荐“网络厕所”会造成什么影响?癌症的治疗费用为何越来越高?华强北的二手手机是否靠谱?新生报道需要注意什么?百度律临—免费法律服务推荐超3w专业律师,24H在线服务,平均3分钟回复免费预约随时在线律师指导专业律师一对一沟通完美完成等你来答换一换帮助更多人下载百度知道APP,抢鲜体验使用百度知道APP,立即抢鲜体验。你的手机镜头里或许有别人想知道的答案。扫描二维码下载×个人、企业类侵权投诉违法有害信息,请在下方选择后提交
类别
色情低俗涉嫌违法犯罪时政信息不实垃圾广告低质灌水
我们会通过消息、邮箱等方式尽快将举报结果通知您。
说明
0/200
提交取消领取奖励
我的财富值
0
兑换商品
--
去登录
我的现金
0
提现
下载百度知道APP
在APP端-任务中心提现
我知道了
--
去登录做任务开宝箱
累计完成
0
个任务
10任务
略略略略…
50任务
略略略略…
100任务
略略略略…
200任务
略略略略…
任务列表加载中...新手帮助如何答题获取采纳使用财富值玩法介绍知道商城合伙人认证
您的账号状态正常
感谢您对我们的支持
投诉建议意见反馈账号申诉非法信息举报
京ICP证030173号-1 京网文【2023】1034-029号 ©2024Baidu 使用百度前必读 |知道协议| 企业推广
辅 助
模 式
var _hmt = _hmt || []; (function() { var hm = document.createElement("script"); hm.src = "https://hm.baidu.com/hm.js?6859ce5aaf00fb00387e6434e4fcc925"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(hm, s); })(); window.tt = 1730663455;
热心网友
时间:2024-11-04 03:45
解:(1)设z1=a+bi(a,b∈R),则z1=a-bi
(1+2i)(a-bi)=4+3i
a+2b+(2a-b)i=4+3i
a+2b=42a-b=3
解得:a=2b=1
∴z1=2+i
(2)由zn+1-zn=2+2i(n∈N*)得:
z2-z1=2+2i
z3-z2=2+2i
z4-z3=2+2i
…
zn-zn-1=2+2i(n∈z,n≥2)
累加得zn-z1=2(n-1)+(n-1)i(n∈N*)
zn=2n+(2n-1)i(n∈N*)
|zn|=4n2+(2n-1)2=8n2-4n+1
令|zn|≤13,即8n2-4n+1≤169
2n2-n-42≤0
∴1-1+8×424≤n≤1+1+8×424<5
∴n的最大整数取值是4.