Dalam ruang vektor ๐, untuk setiap vektor ๐ขโ, harus ada suatu vektor โ๐ขโdalam ๐ sehingga....In the vector space ๐, for every vector ๐ขโ, there must exist a vector โ๐ขโ in ๐ such that....A๐ขโโ๐ขโ=0โB๐ขโ+(โ๐ขโ)=0โC๐ขโโ (โ๐ขโ)=โ1D๐ขโร(โ๐ขโ)=0โ
Question
Dalam ruang vektor ๐, untuk setiap vektor ๐ขโ, harus ada suatu vektor โ๐ขโdalam ๐ sehingga....In the vector space ๐, for every vector ๐ขโ, there must exist a vector โ๐ขโ in ๐ such that....A๐ขโโ๐ขโ=0โB๐ขโ+(โ๐ขโ)=0โC๐ขโโ (โ๐ขโ)=โ1D๐ขโร(โ๐ขโ)=0โ
Solution
Sure, let's analyze the given options step by step to determine which one correctly completes the statement about vector spaces.
In a vector space , for every vector , there must exist a vector in such that:
A.
This statement is true because subtracting a vector from itself results in the zero vector, . However, this is not the standard definition of the additive inverse in vector spaces.
B.
This statement is the correct definition of the additive inverse in vector spaces. For every vector , there exists a vector such that their sum is the zero vector, .
C.
This statement is not generally true. The dot product of a vector and its negative is not necessarily ; it depends on the magnitude of the vector. In fact, , which is not always .
D.
This statement is true in three-dimensional space because the cross product of any vector with itself (or its negative) is the zero vector. However, this is not the standard definition of the additive inverse in vector spaces.
Therefore, the correct answer is:
B.
This option correctly completes the statement about the existence of an additive inverse in a vector space.
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