Question

线性代数：设A为n阶方阵,若R(A)<n-1,则R(A*)=???

Answer 1

R(A)<n-1,则 R(A*) = 0.

因为R(A)<n-1, 所以A的所有n-1阶子式等于0.
故 A* = 0, R(A*) = 0.

满意请采纳^_^