【简答题】定义“矩阵”的一种运算 a b c d ? x y = ax+by cx+dy ,该运算的意义为点(x,y)在矩阵的变换下成点 a b c d .设矩阵A= 1 3 3 -1 (1)已知点P在矩阵A的变换后得到的点Q的坐标为 ( 3 ,2) ,试求点P的坐标; (2)是否存在这样的直线:它上面的任一点经矩阵A变换后得到的点仍在该直线上?若存在,试求出所有这样的直线;若不存在,则说明理由.
【简答题】3. Man: Excuse me, do you know where Classroom Building 3
is? Woman: I’m not
sure, but I think it’s _______ (4)
the library. 4. Man: Any idea which building is the Students’ Center? Woman: The
Student...