rick flick
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#1
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I am having trouble obtaining rank 1 and rank 4.
Are there any x values that even fulfil these 2 cases?
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mqb2766
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#2
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#2
(Original post by rick flick)
Name:  Screenshot 2021-10-18 at 10.35.41 PM.png
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I am having trouble obtaining rank 1 and rank 4.
Are there any x values that even fulfil these 2 cases?
What / how did you get the rank 2, rank 3 cases? Its worth having a read of the posting guidelines sticky at the top of the forum about posting your current attempt/undersatnding, rather than just posting the question.

For rank 4, what is a condition that the matrix has full rank? The matrix is nearly diagonal.
Last edited by mqb2766; 1 month ago
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rick flick
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#3
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(Original post by mqb2766)
What / how did you get the rank 2, rank 3 cases? Its worth having a read of the posting guidelines sticky at the top of the forum about posting your current attempt/undersatnding, rather than just posting the question.

For rank 4, what is a condition that the matrix has full rank? The matrix is nearly diagonal.
For rank 2, we can sub x = -1
For rank 3, what I got so far is that subbing in any value of x gives us rank 3

The 3rd and 4th row are scalars no matter what I sub in?
So I'm quite confused as to whether a rank 1 or rank 4 even exists
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mqb2766
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#4
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#4
(Original post by rick flick)
For rank 2, we can sub x = -1
For rank 3, what I got so far is that subbing in any value of x gives us rank 3

The 3rd and 4th row are scalars no matter what I sub in?
So I'm quite confused as to whether a rank 1 or rank 4 even exists
No, but I suspect you have to show it?
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