query in matrix subtraction

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krishnavenis

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View attachment document.do.dochi
here i am sending an attachment. In this i need to solve matrix. how to subtract column matrix from square matrix. Is there any rules for such subtraction. i need suggestions. plz check this.Looking forward for ur reply.
 

hi sir,
if such a subtraction is not possible, then how can i solve this paper. can u give me some suggestions
 

krishnavenis said:
hi sir,
if such a subtraction is not possible, then how can i solve this paper. can u give me some suggestions
Click to expand...

Sorry buddy.
Can't figure out a way.

Try to write to the author of this paper, with this query.
 

I assume that you are referring to the equation \[ E = (K-\frac{1}{2}ID)^{-1}S \]

In the current form, it looks quite erroneous.

By \[ ID \], I think that they mean that elements of column vector \[ D \] are split into their own separate column (like a diagonal matrix, with diagonal elements taken from \[ D \] ).

Otherwise, \[ K - \frac{1}{2}I D \] makes no sense, because \[ K \] is a matrix and \[ D \] is a vector.
 

jeeudr said:
By \[ ID \], I think that they mean that elements of column vector \[ D \] are split into their own separate column (like a diagonal matrix, with diagonal elements taken from \[ D \] ).
Click to expand...

Could be. But, then it is an improper use of notation.
A nxn identity matrix multiplied to a nx1 vector would result in a nx1 vector only.


jeeudr said:
Otherwise, \[ K - \frac{1}{2}I D \] makes no sense, because \[ K \] is a matrix and \[ D \] is a vector.
Click to expand...

True.
I believe only the author of this paper can best clarify, why he has used such notation.
 

thank you so much for ur response sir. I will try in this way.
 

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