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【简答题】
n阶对称阵的全体V对于矩阵的线性运算构成一个 维线性空间，给出n阶可逆矩阵P，以A表示V中的任一元素，变换T(A)=P T AP称为合同变换，试证：合同变换T是V中的线性变换。
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举一反三
【判断题】A customer services manager needs to be good at both oral and written communication.
A.
正确
B.
错误
【判断题】Decide whether the following statements are True or False according the article in the videos of Unit 3. A customer services manager takes responsibilities of solving problems, making decisions and ma...
A.
正确
B.
错误
【判断题】Decide whether the following statements are True or False according the article in PPT 3.2 A customer services manager should have thorough knowledge of the products or services the company provides.
A.
正确
B.
错误
【判断题】A customer services manager takes responsibilities of solving problems, making decisions and managing the department.
A.
正确
B.
错误
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