4.已知,如果R(A)=2，则a=/ananas/latex/p/404091
举一反三
- 已知4阶方阵的秩为2，则= 。/ananas/latex/p/278/ananas/latex/p/441549
- 已知矩阵A=，则r(A)= ./ananas/latex/p/807727
- 已知()=0.4，则()=( )/ananas/latex/p/152/ananas/latex/p/278/ananas/latex/p/847/ananas/latex/p/281/ananas/latex/p/152/ananas/latex/p/4781/ananas/latex/p/7419/ananas/latex/p/6547
- 已知单位向量满足，则 =/ananas/latex/p/20591/ananas/latex/p/48276/ananas/latex/p/958600
- 已知四阶行列式，则，。/ananas/latex/p/304337/ananas/latex/p/987250/ananas/latex/p/987254