矩阵
的所有特征值的和与积分别为( )
A
-6；14
B
6；14
C
6；-6
正确答案
D
-6；-6
正确答案：C
详细解析
【答案解析】本题考查矩阵特征值
所属课程：线性代数（经管类）
考试类型：成人自考
基本
文件
流程
错误
SQL
调试
- 请求信息 : 2026-10-08 06:36:16 HTTP/2.0 GET : www.20230611.cn/index/question/detail/id/5114726.html
- 运行时间 : 0.058004s [ 吞吐率：17.24req/s ] 内存消耗：393.95kb 文件加载：143
- 查询信息 : 3 queries 0 writes
- 缓存信息 : 0 reads,1 writes
- 配置加载 : 78
- [ BEHAVIOR ] Run Closure @app_init [ RunTime:0.000023s ]
- [ CACHE ] INIT File
- [ BEHAVIOR ] Run \addons\alioss\Alioss @app_init [ RunTime:0.000469s ]
- [ BEHAVIOR ] Run Closure @app_init [ RunTime:0.000492s ]
- [ BEHAVIOR ] Run app\common\behavior\Common @app_init [ RunTime:0.000158s ]
- [ LANG ] /www/wwwroot/learn/thinker/admin/thinkphp/lang/zh-cn.php
- [ BEHAVIOR ] Run app\common\behavior\Common @app_dispatch [ RunTime:0.000021s ]
- [ ROUTE ] array (
'type' => 'module',
'module' =>
array (
0 => 'index',
1 => 'question',
2 => 'detail',
),
)
- [ HEADER ] array (
'accept-encoding' => 'gzip, br, zstd, deflate',
'user-agent' => 'Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)',
'accept' => '*/*',
'host' => 'www.20230611.cn',
'content-length' => '',
'content-type' => '',
)
- [ PARAM ] array (
'id' => '5114726',
)
- [ LANG ] /www/wwwroot/learn/thinker/admin/public/../application/index/lang/zh-cn.php
- [ BEHAVIOR ] Run app\common\behavior\Common @module_init [ RunTime:0.000199s ]
- [ BEHAVIOR ] Run \addons\alioss\Alioss @module_init [ RunTime:0.000153s ]
- [ BEHAVIOR ] Run \addons\user\User @upload_config_checklogin [ RunTime:0.000029s ]
- [ BEHAVIOR ] Run \addons\alioss\Alioss @upload_config_init [ RunTime:0.000101s ]
- [ BEHAVIOR ] Run \addons\summernote\Summernote @config_init [ RunTime:0.000133s ]
- [ RUN ] app\index\controller\Question->detail[ /www/wwwroot/learn/thinker/admin/application/index/controller/Question.php ]
- [ DB ] INIT mysql
- [ VIEW ] /www/wwwroot/learn/thinker/admin/public/../application/index/view/question/detail.html [ array (
0 => 'user',
1 => 'site',
2 => 'config',
3 => 'question',
4 => 'relatedQuestions',
5 => 'seo_title',
6 => 'seo_keywords',
7 => 'seo_description',
) ]
0.065929s
的一个极大线性无关组可以取为()