问题
选择题
| —Where does a tiger live? —_____. |
A. In a forest. B. In a river. C. On the farm. |
答案
答案：A
搜题请搜索小程序“爱下问搜题”
| —Where does a tiger live? —_____. |
A. In a forest. B. In a river. C. On the farm. |
答案：A
若Aα=5α，其中α=(1，1，1)T，求此二次型的表达式．