lilguppie1585 lilguppie1585
  • 17-07-2019
  • Mathematics
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3. Could a 5 x 8 matrix have dim Col A 6 and dim Nul A - 2? Justify your answer. (Hint: Think about the possible pivot rows and columns

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presipao presipao
  • 29-07-2019

Answer:

No

Step-by-step explanation:

A 5x8 matrix [tex]A[/tex] represents a linear transformation between the vector space [tex]\mathbb{R}^8[/tex] and [tex]\mathbb{R}^5[/tex]. Remeber that the columns of [tex]A[/tex] generate the image of the linear transformation, which is a vector subspace of [tex]\mathbb{R}^5[/tex]. Therefore, [tex]\dim \text{Col}A \leq 5[/tex], which is the dimension of the the total space.

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