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“m=”是“向量=(m+2,3m)与=(m-2,m+2)互相垂直”的( ) A....
“m=
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”是“向量
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=(m+2,3m)与
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=(m-2,m+2)互相垂直”的( )
A.充分不必要条件
B.必要不充分条件
C.充要条件
D.既不充分也不必要条件
考点分析:
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和向量
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