maths help

👨🏻‍🏫 學術台數學

[匿名]

2010-05-29 5:22 pm

What is the area of a triangle formed by the vectors 2i-j+3k and i+2j+2k.

回答 (1)

用戶9112

2010-05-29 7:26 pm

✔ 最佳答案

Please see the following:

圖片參考：http://img139.imageshack.us/img139/6127/49378016.png

2010-05-29 11:26:32 補充：
http://img139.imageshack.us/img139/6127/49378016.png

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