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Let a be a nonzero vector in . Define by
  1. Let a be a nonzero vector of . Answer the following questions.
    (ii) Write and let . Show that is a basis
    for .

Ask by Adkins Hart. in South Korea
Dec 16,2024

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Answer

벡터 가 선형 독립이므로, 의 기저입니다.

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To show that is a basis for , we need to demonstrate that the vectors and are linearly independent. This means that the only solution to the equation (where and are scalars) must be and .
We can express this equation as follows:
This expands to the system of equations:
We will analyze these equations. If we assume and are not both zero, we can derive relationships between them. From the first equation, we can solve for :
Substitute into the second equation:
Since is nonzero, and cannot both be zero, thus . Therefore, it must be that , and from the first equation, follows. This confirms that and are linearly independent.
As a result, since we have two linearly independent vectors in , is indeed a basis for .

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