wei shen me A 0 0 B = |A||B| 其中A,B为方阵

wei shen me A 0 0 B = |A||B| 其中A,B为方阵 wei shen me为什么 zhe shi wei shen me wei shen me zhe me nan? wei shen me ren shen na me jing ren wei shen me yao chi fan wei shen me da bu hu zi wei shen me hua yao diao xie 2-1=?wei shen me wei shen me wo shi sb? wei shen me wei shen me jin nian tian zai zhen me dou ne? chu zhong English question(wo da bu dao zi,sorry!)He bought a hat___red silk.a made from b.made of c.was made of d.is made of da an shuo xuan b wo ren wei shi xuan C .Cjiu shi bei dong yu tai a,qing jie shi yi xia wei shen me xuan,wei shen me bu xuan wei shen me dian nao mei ban fa da zi le?kuai a T.T 我国森林海岸的气候wei shen me de 荒漠中的骆驼,尿液非常少wei shen me wei shen me shu ru fa zong shi ying wen wei hun xian yu shen me yi si? wei shen me zhi neng da yingwen l