is the vector a=i+2J-2ka veit vector?if not find the unit ve
is the vector a=i+2J-2ka veit vector?if not find the unit vector having the same direction as a?
is the vector a=i+2J-2ka veit vector?if not find the unit vector having the same direction as a?
字母上面是向量~
is the vector a=i+2J-2ka veit vector?if not find the unit vector having the same direction as a?
字母上面是向量~
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