设 [tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex] 是 [tex=2.714x1.071]Xa6YzCV9VTlW9p4lLOpktw==[/tex] 矩阵，将其按行分为 [tex=1.071x0.786]7amv8HYxGKfSrfuxQtnKpBNtwd0YEW5lb8cQSSPZPXs=[/tex] 项[p=align:center][tex=6.286x5.214]3BT1BgBZQ5uJXxD5dg+w24y+UYN0flJwCKKhtGXldKmKjnKpkQrDpztwixi5On9W/mZPZRoVEX8LHvV/juDaSvc4MxPpig4mJj8iKzkJ7yA=[/tex]其中 [tex=1.0x1.214]134fDfyZx2aGiyeQW3vIfw==[/tex] 为 [tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex] 的第 [tex=0.429x1.0]tY1D6kOYVChmMRb90enbxvHL/fwS4wwzDrp/yeoy/qU=[/tex] 行 [tex=7.0x1.357]GW22REPGzuB4cl1ds3utd9kNH2MzweevUNQ49aypuHE=[/tex]对于 [tex=1.071x0.786]7amv8HYxGKfSrfuxQtnKpBNtwd0YEW5lb8cQSSPZPXs=[/tex] 阶单位矩阵 [tex=1.143x1.214]Yte1JQlBkpxYfSA/f6IroXr7WAD1n19zPMzgF7hklaI=[/tex] 也将其按行分为 [tex=1.071x0.786]7amv8HYxGKfSrfuxQtnKpBNtwd0YEW5lb8cQSSPZPXs=[/tex] 块[p=align:center][tex=6.0x4.5]GT465ioRluweC0sqK3UzuEqdMlk6fK8iIHJoDEWgQYdA1wwHjrLFWPIWjcneRD7zz5uKQ8NJPz+UHH1l12X+2iTfkDB1BpjjKazkwWweyYmjK0S9+1qstCwHxsyWZiWGw4OaImsPtsSGZudG2Bp0yA==[/tex] 其中 [tex=0.714x1.0]pGG8m+T3JVAP9pgIGFwEUDBftR5z3wT/bKiu4S8eYU4=[/tex] 为 [tex=1.143x1.214]Yte1JQlBkpxYfSA/f6IroXr7WAD1n19zPMzgF7hklaI=[/tex] 的第 [tex=0.429x1.0]tY1D6kOYVChmMRb90enbxvHL/fwS4wwzDrp/yeoy/qU=[/tex] 行 [tex=7.0x1.357]GW22REPGzuB4cl1ds3utd9kNH2MzweevUNQ49aypuHE=[/tex]试由 [tex=3.071x1.0]SLDaGd7C7NFB7q0WR9mIFw==[/tex] 证明: [tex=11.286x1.357]pGG8m+T3JVAP9pgIGFwEUHl/w11NuAyVzeNLWykemm56ESOUb5usP+ybTdLPoHnHgKRB7laEG+jpCcl9q0sPCA==[/tex]