模拟试卷3
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已知向量且,求
(1)数k的值;
(2)A10.
设1为3阶实对称矩阵A的2重特征值,则A的属于1的线性无关的特征向量个数为:
若向量组线性无关,则数a的取值必满足__________.
Fatal error: Uncaught Error: Call to a member function fetch_array() on boolean in /data/zikao/sites/www.fjzikao.net/www/phpcms/libs/classes/db_mysqli.class.php:153
Stack trace:
#0 /data/zikao/sites/www.fjzikao.net/www/phpcms/model/get_model.class.php(30): db_mysqli->fetch_next()
#1 /data/zikao/sites/www.fjzikao.net/www/caches/caches_template/default/content/yzb_exam_detail.php(142): get_model->fetch_next()
#2 /data/zikao/sites/www.fjzikao.net/www/phpcms/modules/yzb/exam.php(293): include('/data/zikao/sit...')
#3 /data/zikao/sites/www.fjzikao.net/www/phpcms/libs/classes/application.class.php(31): exam->detail()
#4 /data/zikao/sites/www.fjzikao.net/www/phpcms/libs/classes/application.class.php(19): application->init()
#5 /data/zikao/sites/www.fjzikao.net/www/phpcms/base.php(251): application->__construct()
#6 /data/zikao/sites/www.fjzikao.net/www/phpcms/base.php(153): pc_base::_load_class('application', 'libs/classes', 1)
#7 /data/zikao/sites/www.fjzikao.net/www/phpcms/base.php(135): pc_base::load_sys_class('application')
in /data/zikao/sites/www.fjzikao.net/www/phpcms/libs/classes/db_mysqli.class.php on line 153