题目应该是哪里抄错了, 下面构造例子说明这一点.设2阶矩阵C(t) = [cos(t),sin(t);-sin(t),cos(t)], 可知C(t)正交且|C(t)| = 1.对n = 3, 考虑3阶分块矩阵A = [-1,0;0,C(t)], B = E.则A, B均为正交阵, 且|A| = -|C(t)|...