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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.
    (i) Show that is a linear map.
    (ii) Write and let . Show that is a basis
    for .

Ask by Conner Lee. in South Korea
Dec 15,2024

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Answer

(i) 는 선형 변환입니다.
(ii) 의 기저입니다.

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Beyond the Answer

To show that is a linear map, we need to demonstrate that it satisfies the properties of additivity and homogeneity.
(i) For any vectors and scalar :
  1. Additivity:
  2. Homogeneity:
Since both properties hold, is indeed a linear map.
(ii) To show that is a basis for , we need to verify that these vectors are linearly independent. We can do this by calculating the determinant of the matrix formed by and :
Since is a nonzero vector, both and cannot be simultaneously zero, confirming that the determinant is nonzero. Therefore, spans and is linearly independent, proving it forms a basis for .

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