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时间:2020-03-31
《《纯书后作业解答》PPT课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、作业1-2p264(2,3),5(2),6(1,2,4)作业1-1p251,2,3作业1-3p278(1,2,6),9,10(2),12Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.2012.21行列式全部(1-3)第2次作业4.计算下列各行列式:(2)容易看到第1,2行的和就是第4行(3)容易看到每行每列都有公因子Evaluationonly.CreatedwithAspose.Slidesfor.NE
2、T3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.2012.22行列式全部(1-3)第2次作业5.求解下列方程:(2)可以按照范德蒙德行列式考虑Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.2012.23行列式全部(1-3)Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfil
3、e5.2.0.0.Copyright2004-2011AsposePtyLtd.2012.24行列式全部(1-3)111,112,121,122,211,212,221,222,Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.2012.25行列式全部(1-3)P266(4)证明习题1考虑=(a-b)(a-c)(a-d)(b-c)(b-d)(c-d)(a+b+c+d)每行的(-a)倍加到下一行Evaluati
4、ononly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.2012.26行列式全部(1-3)r2-a×r1r3-a×r2r4-a2×r3Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.2012.27行列式全部(1-3)按第1列展开和(d-a)并分别提出(b-a)和(c-a)得到r2
5、-b×r1r3-b(b+a)×r2Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.2012.28行列式全部(1-3)r2-b×r1r3-b(b+a)×r2将第3行整理一下Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.2012.29行列式全部(1-3)将第
6、3行整理为再按第1列展开并分别提出(c-b)和(d-b)Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.2012.210行列式全部(1-3)提出(c-b)和(d-b)提出之后得到Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.2012.211行列式全部(1
7、-3)(b-a)(c-a)(d-a)(c-b)(d-b)再将6个相减的括弧调换就可以得到最终的结果Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.2012.212行列式全部(1-3)(b-a)(c-a)(d-a)(c-b)(d-b)再将6个相减的括弧调换就可以得到最终的结果曾经提出的式子是=(a-b)(a-c)(a-d)(b-c)(b-d)(c-d)(a+b+c+d)本题结束Evaluationonly.C
8、reatedwithAspose.Slidesfor
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