Jacob matrix

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Great444
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#1
Report Thread starter 7 months ago
#1
Why my answer is not matching with the answer ,where did I go wrong, I calculated the tr and det , I followed the lecture notes too
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mqb2766
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#2
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#2
You should be able to spot the typos?
The "ad" term is positive (two negatives) so the factor will cancel.
The trace is the sum of the diagonal elements. If your notes say otherwise ...

Note
https://www.wolframalpha.com/input/?...5Ba%2C-b%5D%5D
may be worth using to check your working.
Last edited by mqb2766; 7 months ago
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mqb2766
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#3
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#3
(Original post by Great444)
Why my answer is not matching with the answer ,where did I go wrong, I calculated the tr and det , I followed the lecture notes too
Can you upload your notes page before as well so the problem is clearly defined. Not sure your lecture notes are correct either.
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Great444
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#4
Thanks I attached them.
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Great444
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#5
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#5
(Original post by mqb2766)
Can you upload your notes page before as well so the problem is clearly defined. Not sure your lecture notes are correct either.
I tried to do the calculation but I'm not getting the same answer as what I've sent in the first attachment
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mqb2766
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#6
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(Original post by Great444)
Thanks I attached them.
Im getting lost. In the OP, can you post the page before that one (second image, the typed one that starts with "steady states"), not different ones.
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mqb2766
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#7
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#7
(Original post by Great444)
I tried to do the calculation but I'm not getting the same answer as what I've sent in the first attachment
I know. It looks like both you and your notes are wrong.
Can you post the full question regarding this jacobian.
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Great444
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#8
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(Original post by mqb2766)
I know. It looks like both you and your notes are wrong.
Can you post the full question regarding this jacobian.
This is a different question
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Great444
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#9
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#9
Now for this question which no way am getting the same answer as this I will attach it, but not sure where am going wrong .
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mqb2766
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#10
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#10
(Original post by Great444)
Now for this question which no way am getting the same answer as this I will attach it, but not sure where am going wrong .
From a very quick look, starting with the nondimensional equations, I agree with the Jacobian in the notes, but the det and tr are not correct. The correct values are in the wolframalpha link I posted earlier.
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Great444
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#11
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#11
(Original post by mqb2766)
From a very quick look, starting with the nondimensional equations, I agree with the Jacobian in the notes, but the det and tr are not correct. The correct values are in the wolframalpha link I posted earlier.
Thank you, these should be the answers, I will try to solve it again.
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mqb2766
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#12
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#12
(Original post by Great444)
This is a different question
Just for completeness, Im ignoring this, unless you have a query about it.
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Great444
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#13
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#13
(Original post by mqb2766)
Just for completeness, Im ignoring this, unless you have a query about it.
ok, thank you, I will write here if I have any question.
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