线性代数A学习通超星期末考试答案章节答案2024年

线性代数A学习通超星期末考试章节答案2024年/star3/origin/cde73aae84114cc8e000ec5bae882b7c.png

答案:对/star3/origin/c859305e9fa322824a22585168526e43.png

答案:对/star3/origin/8161ddbdb78b439856a63811382df394.png

答案:错/star3/origin/f0386a799fc7921cf0dea9ede4b879b0.png

答案:错/star3/origin/ac0ca2d89a989a7a00f68f3957dffeb4.png

答案:45；/star3/origin/44acda0cab6859fd39b6dd6ae761fda7.png

答案:0；/star3/origin/afd50cbcea108f8b279227d6371d4733.png

答案:120；/star3/origin/17ab738287889fc45be9ad7d3349ba75.png

答案:28；/star3/origin/933cbdae7a3ae08a1920726326699f57.png

答案:错/star3/origin/85eeb9f3bd7bd26b8aad58cf806bfa10.png

答案:对/star3/origin/ad8657f711a624860122161035842344.png

答案:错/star3/origin/ec6fb744245e6066a3194db626506dc5.png

答案:对/star3/origin/da29a7a494a7a9decc79cfad0a92a776.png

答案:0/star3/origin/5b9a38d9326adc172c1ea3d40dcffb52.png

答案:错/star3/origin/84b75d08004390bf2f1bd18b9a7763a3.png

答案:对/star3/origin/96099b0dc82f1606424812639f068d24.png

答案:错/star3/origin/db18d9b7584cde4b00b3a45bbdfeb260.png

答案:错/star3/origin/87e094308abf0471600f1f357cd94768.png

答案:对/star3/origin/c6d1e18598b7e0060400e2276c82f199.png

答案:对/star3/origin/c5ff8854bb2f2e24e5a024e6f2d8001a.png

答案:错/star3/origin/bc7c604ed80383cb84267553894b4f54.png

答案:3/star3/origin/f4508464298367b1aff2091f67d9b352.png

答案:7/star3/origin/5eedca0db2794afb77c8e922c320f82e.png

答案:n/star3/origin/e35d64a7f4361d1e3f64dabc2a883bea.png

答案:n/star3/origin/e1940d04850e06dc41ad3fd416166b45.png

答案:1/star3/origin/20f1c70b6f5e4038bd4b58ee416efa1f.png

答案:0/star3/origin/a42ac357f89fd1b09f790c2bae051205.png

答案:1/star3/origin/2933d86ee9206fb7b2efcee88f49c107.png

答案:C;C/star3/origin/2d26a098dc955b1fc12b66f25050eda1.png

答案:A；A/star3/origin/d13648fe8337a7b8c55dd54eb42cdbcc.png

答案:D;D/star3/origin/df1bdc19eadb7f78c63b22ae3cbce7fd.png

答案:D;D/star3/origin/e724a92a2c47c3b184272893b73c7203.png

答案:B；B/star3/origin/4f0d508a4a4deaf9fd3be1d5db62d195.png

答案:-12/star3/origin/85e62414d06373b684e992aa38201623.png

答案:0/star3/origin/9b94e6950b88f8617399695d10e5ce2a.png

答案:256/star3/origin/1107e1154547d2dce1b02bf168291c72.png

答案:以上都对/star3/origin/c791288929d68903c8fee9bdae5c044d.png

答案:-16/star3/origin/9e2092eab9c5c245db6caf924f566564.png

答案:-20/star3/origin/e3e079fc709efbe59620ccfac41036db.png

答案:768/star3/origin/d9490f207cddb642626ef26967fdff69.png

答案:-45/star3/origin/a016f9f64b90320a46647a0940d6f09d.png

答案:以上结论都不对/star3/origin/58c27e1b4781531e23d999361cf46803.png

答案:-20/star3/origin/4dd9bb35de054f6f4e30585000969867.png

答案:；/star3/origin/dbdcb1209492c6cb84e0b0e5cb6f4dcb.png

答案:；;3/8/star3/origin/94ad180417377412767834b6278eba9a.png

答案:；;A-3E/star3/origin/f0a7b1f54851de7a18b1e2c79f59b76f.png

答案:（2）/star3/origin/2639875410980112194b8973941e5356.png

答案:2/ananas/latex/p/3690856

答案:线性相关/star3/origin/37f190d482bd95340a209c13fb032e6f.png

答案:线性无关行列式是一个数。

答案:对求下列排列的逆序数：431265

答案:6/star3/origin/2b84b19bd04a8df70150e792ed506fda.png

答案:解：/ananas/latex/p/5680985

答案:-/star3/origin/6e3125531993d2fdee9efe2fc8184428.png

答案:0/star3/origin/76272ede95b0226373b264081d269644.png

答案:齐次方程组有非零解，即解不唯一，则其系数行列式应为0./star3/origin/90aff8dfde99eee0fd38885d4482cbe1.png

答案:3个/star3/origin/fcb4e16fa15c21a211b85320b8689a21.png

答案:1/star3/origin/2eb34a50e668e406d0eded95749caa3f.png

答案:2/star3/origin/d3bb7fe7caa64c562efb51b3fc82a7fb.png

答案:3/star3/origin/32ec9315dfb15464b5b846f990374a32.png

答案:6/star3/origin/a2958f64212f1c9df4887a075ecbd1ea.png

答案:5/star3/origin/d08f91ba27af6d0dc0397640c6e41505.png

答案:-6/star3/origin/53338dbd2fc1c78208bf2eab0b47602f.png

答案:n-r/star3/origin/ea8928c01425f4eacd51347fe326dc35.png

答案:3n元线性方程组如果只有唯一解，则它的系数矩阵的秩等于

.

答案:n线性方程组有解当且仅当它的系数矩阵的秩与增广矩阵的秩

.

答案:相等已知A为m×n矩阵，齐次线性方程组AX=0只有零解的充分必要条件是系数矩阵A的秩

.

答案:等于n若矩阵A,B满足AB=0，则A=0或B=0.

答案:错设A，B为n阶方阵，则｜A+B｜=|A|+|B|.

答案:错设A,B为n阶方阵，则｜AB｜=|A||B|.

答案:对如果A是对称矩阵，那么-A也是对称矩阵.

答案:对/star3/origin/8f2844da56adb7f67d730ebe9225fa83.png

答案:对/star3/origin/3c303feae852970414f6137871ffad35.png

答案:0/star3/origin/75935a357f3d777c839149abc86af51b.png

答案:8/star3/origin/33cd30dab1ef75994d1bb0388a3eeeb5.png

答案:5760/star3/origin/4bff0d6a9b47b4474d3ce6c8edb4ee39.png

答案:0/star3/origin/548e2dc8130b4bf59234f36b38701ec6.png

答案:1;2/star3/origin/a3ce00863564731019fd48b568bc6d2a.png

答案:和/star3/origin/138f8f54d8819198e23985d7bc6811cc.png

答案:中各行元素之和为零/star3/origin/6ce1fb06b4ce839e3e932fcc7ac8b661.png

答案:2/star3/origin/091fa811513a46d83e342e16a779b306.png

答案:2/star3/origin/423566b4a90aede033deec3d400f9848.png

答案:9/star3/origin/f34cff25a5e7bb1e20eff15371c2e8de.png

答案:;(100020003/star3/origin/8d8c4b328cf07ef8d82f804e81e781be.png

答案:；1/8;八分之一/star3/origin/64c8c58a479c2994fea9019c30fc8742.png

答案:2E;(200020002/star3/origin/84ef5f6e509bcb44c741a3a56b3dc354.png

答案:;(010101102/star3/origin/49043017c429ddb2068ff50a4c3f2fcf.png

答案:-2;负二以下结论错误的是(

)

答案:对单位矩阵施行若干次初等变换得到的矩阵为初等矩阵。/star3/origin/ad594f97ead4c55e9c0f912fd47e6a1c.png

答案:2/star3/origin/06126e8121c1561a595e04443a8ae810.png

答案:;a=2b;a等于2b;b=0.5a;b=a/2;2b=a;2b = a;2b-a=0;a-2b=0/star3/origin/2ce40b7196e40f63992caf773cc2816f.png

答案:6/star3/origin/69967b0f6596f0b6340bf4fd7c0718c3.png

答案:；-(2A+3E/star3/origin/d3a677f93814348bf9f89099b8cf22f0.png

答案:时，方程组由无穷多解，且解为;且时，方程组由唯一解;时，方程组无解;时，方程组由无穷多解，且解为/star3/origin/7b4a96069f70f2d60b277634ed8dfd6f.png

答案:是该向量组的一个极大无关组，且，;是该向量组的一个极大无关组，且，G、以上结论都不对/star3/origin/ecb2354a2621b67db60ee50dcc0a33b5.png

答案:有非零解/star3/origin/37d9a9e5928a9e4bae1ddbc3e6150c3f.png

答案:，则B的非零行数少于n/star3/origin/733cc60d2c5cc5c0a318d62dab55a910.png

答案:0/star3/origin/6f07d99163bebf89a512c725750622ad.png

答案:18/star3/origin/a57bffc80a64e895a41ee113dc788285.png

答案:10/star3/origin/96f9a595f050de4b629d927332857112.png

答案:-50/star3/origin/786e2e7695bc24c95c5f799ddbae8528.png

答案:4/star3/origin/d0663a9feb7e0bc1589fbd8bd21dda5a.png

答案:4/star3/origin/2c1bef6029c375647a17fcda3da70050.png

答案:9关于行列式中元素的余子式和代数余子式的说法正确的是

答案:二者都与元素本身无关，仅与元素位置有关/star3/origin/351eee92b3e7d946696aa1c3fd606b06.gif

答案:0以下特殊矩阵一定为方阵的是：

答案:三角矩阵;对角矩阵;对称矩阵“两个矩阵的行数和列数相等”，是“两个矩阵相等”的（）条件

答案:必要但不充分以下特殊矩阵一定为方阵的是:

答案:三角矩阵;对角矩阵;对称矩阵/star3/origin/690e776462cd11f0f40e991b5cd13826.png

答案:是对称矩阵已知A是3阶方阵且|A|=1/3，则|(A/7)^(-1)-12A^(*)|=

.(这里A^(*)表示A的伴随矩阵)

答案:81设A、B均为n阶可逆矩阵,则必有()

答案:AB可逆/star3/origin/0d7ab065a28046e3f35c3035d72e1190.png

答案:25设F,G都是4阶方阵,且|F|=2,|G|=-5,则|-3FG|等于()

答案:-810设|A|,|B|是n阶行列式,则下列选项中,正确的是

答案:|AB|=|A||B|/ananas/latex/p/796578

答案:P1P2A=B/star3/origin/c4b1d0230de30809f650c72a396add5e

答案:3/star3/origin/a77fdba3de3483a157112bd5a8dba5b0.jpg

答案:-1/star3/origin/07320d6da63fabded427169e62939213.jpg

答案:-2;3/ananas/latex/p/813811

答案:-2;-2;9;9;5;5;3;3;只有零