【简答题】
确定a的值，使下面线性方程组有无穷多解。<img src="https://huaweicloudobs.ahjxjy.cn/124C07EC4B3608ADA0DB521A89420393.png" title="11.png" alt="11.png"/><img src="https://huaweicloudobs.ahjxjy.cn/7391D47E0F33443B710608BCE9ECE431.png" title="a=.png" alt="a=.png"/>[填空]。
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/59EF0EC433795A89596B547DEBAB31A0.png title=11.png alt=11.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/CCA5F067265D4E8E5F86E760E019822F.png title=11-1.png alt=11-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/A3DBEE39F5B8E186225F9CBA7041D4B3.png title=11-2.png alt=11-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/47A098EB95F0D1FA6693E3D44FFCC877.png title=11-3.png alt=11-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/C0D7DDDC9BA3115A7AD8F86AFA4C4ED4.png title=11-4.png alt=11-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/DCCED947C14F3F3845531CDD5B16E9C0.png title=11.png alt=11.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/92FD53F226A26623E2117634A34E1431.png title=11-1.png alt=11-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/B4C88BDCD88659598E1F774393382ECF.png title=11-2.png alt=11-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/24E7CDBE0EE4E58CEF03A276798F22EB.png title=11-3.png alt=11-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/250CF10934E496C63DEFE643DF009F4F.png title=11-4.png alt=11-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/CCB9A4B6C8BC3BBE192E0B028159DC32.png title=11.png alt=11.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/C6C4992631F5856791C96983D46D14F9.png title=11-1.png alt=11-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/39D7B31521211EE6037D7325833BE904.png title=11-2.png alt=11-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/E127F2DA6CAB00609889F3B49D377D52.png title=11-3.png alt=11-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/A4AFADAEA5FB905EA0130C2678CEA3D2.png title=11-4.png alt=11-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/1C741F761D9F2DB3F0824F0C6C3D264B.png title=11.png alt=11.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/F8487ED23DA307B96C75C96C4ADC649A.png title=11-1.png alt=11-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/7E46802306681D0DDE9F1ED2E9BE4E4E.png title=11-2.png alt=11-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/B3E9D4A020257753DE2E31FA503C6CB0.png title=11-3.png alt=11-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/8E5DC0C9B725B37F5E80234583B0587E.png title=11-4.png alt=11-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/0097CB8B891CCA773584648710F4B947.png title=11.png alt=11.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/7B40902CA9E0633D476058CB9F15D3C3.png title=11-1.png alt=11-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/6F1EABD67F82DE3ED67FBCE44D161276.png title=11-2.png alt=11-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/ED59030F7719C6C356A9919B68A66FAF.png title=11-3.png alt=11-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/6491F33DB4A23828369499F0137225CE.png title=11-4.png alt=11-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/FB79898ACEE8B09F20193E26F0DD03AD.png title=11.png alt=11.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/FF8A7311EA38934A4DA6CD4AB3A74A1A.png title=11-1.png alt=11-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/37900A7070E054D061FEB428488B609E.png title=11-2.png alt=11-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/3E7D1DA0DE560BEA129E967758DB34F4.png title=11-3.png alt=11-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/F473711736C05695AAA449888457DE1A.png title=11-4.png alt=11-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/7C0E2B66155168CE159B6EB76AE16A06.png title=11.png alt=11.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/521D4470387014256A0F9D0566B48585.png title=11-1.png alt=11-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/8BEFBA1D75B715B9C4A04C9EC4350940.png title=11-2.png alt=11-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/5E1D900449F06E49F63CA2F13AD3ABE3.png title=11-3.png alt=11-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/FAA514735DA0501F2F603A292B480671.png title=11-4.png alt=11-4.png/>
【多选题】
<img src=https://huaweicloudobs.ahjxjy.cn/4E166ABC7D8D9CB2B0224265159981AF.png title=11.png alt=11.png/><img src=https://huaweicloudobs.ahjxjy.cn/24E0907ED0230C3FE1B001D96DCA0640.png title=3.png alt=3.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/4E8F93EAAFB8DF486EC87E8B24398064.png title=15.png alt=15.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/DA4B0B0D0E4F2CB097E82CDC0F26256A.png title=14.png alt=14.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/CECFB04B26C2A732E726F03703F898D9.png title=13.png alt=13.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/C6ED86060FEC93DF6A569EECF1362476.png title=12.png alt=12.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/C45D271E1B293D6F6EEA218C9ED95308.png title=11.png alt=11.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/D0FA53B2910F99CD799D3BD9A5AC211E.png title=11-1.png alt=11-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/BF8ACB3C8BEBBB6772F594BBC0741360.png title=11-2.png alt=11-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/4021A399494AB6CAF4FF466CC1468AB3.png title=11-3.png alt=11-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/737D7B9C2B79A41455B07B6E8F9B4219.png title=11-4.png alt=11-4.png/>
