nnnnnnnnnnbxaxaxabxaaxxabaxaxxa22112222212111212111设线性方程组12若常数项b,b,...,bn不全为零,则称此方程组为非齐次线性方程组;12若常数项b,b,...,bn全为零,此时称方程组为齐次线性方程组.非齐次与齐次线性方程组的概念一、克拉姆法则如果线性方程组1)(22112222212111212111nnnnnnnnnnbxaxaxabxaaxxabxaaxxa...
克莱姆法则nnnnnnnnnnbaxaxxabaxaxxabaxaxxa22112222212111212111线性方程组112201()(1,2,,)如果它的系数行列式,则它有唯一解jjjjnnjDDxbAbAbAjnDD12nbbbb12nxxx,x111212122212nnnnnnaaaaaaA,aaa证明:将方程组写为的两边左乘-1,...
1.3.1CramersRuleandSomeImportantConclusionsLinearAlgebra(2credits)11112211211222221122.nnnnnnnnnnaxaxaxbaxaxaxbaxaxaxbLLLLLLLLLLLLLLLSupposelinearequationsIftheconstanttermsarenotallzero,thenthissystemofequationsiscalledinhomogeneouslinearequations;Iftheconstanttermsareallzero,thenthesystemofequationsiscalledhomogeneouslinearequations.Conceptsofinhomogene...
§1.5克莱姆(Cramer)法则回顾:11112212112222axaxbaxaxb对于二元线性方程组D0当时,该方程组有唯一解:来说,1122221111122122,babaDxaaDaa1112122211122122.ababDxaaDaa11112211211222221122,(1)nnnnnnnnnnaxaxaxbaxaxaxbaxaxaxb设线性方程组若常数项不全为零,则称此方程组1,2,,nbbb若常数项全为零,则称此方程组为1,2,,nbbb...