【简答题】设A为n阶方阵,k≠0,则|kA|=______|A|.
【单选题】设A为n阶矩阵,k为常数,则(kA) * 等于( ).
D.
k\r\n n(n-1) \r\nA\r\n *
【单选题】若A为n阶方阵, k为常数,|A|和|kA|分别是矩阵A、kA的行列式, 则有 --------------------- ( )
【单选题】An account linked with another account that has an opposite normal balance and that is subtracted from the balance of the related account is a(n):
【单选题】Let A be a n×n matrix (n ≥ 3) and A∗ is adjoint ofA. Suppose that k 【图片】0,±1, then (kA)∗ = ( ).