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How to get smith form of a matrix in matlab

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sakshi ahuja
sakshi ahuja 2016-3-25
评论： Walter Roberson 2016-3-25
When i tried this code: syms x A = [x^2 + 3, (2*x - 1)^2; (x + 2)^2, 3*x^2 + 5] S = smithForm(A) I got following error: Undefined function or method 'smithForm' for input arguments of type 'sym'. How to resolve this.

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Roger Stafford
Roger Stafford 2016-3-25
编辑：Walter Roberson 2016-3-25
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sakshi ahuja
sakshi ahuja 2016-3-25
编辑：sakshi ahuja 2016-3-25
When i used mupad, then it is succesfully givivng me smith form but when i tried to evaluate [S, U, V]; it is showing error. Error is in this line: [S, U, V] := linalg::smithForm(A, All)
Walter Roberson
Walter Roberson 2016-3-25
The MATLAB interface to smithform is available only from R2015b. Before that you need to interface into the MuPAD linalg routine.
sakshi, are you executing those commands inside a MuPAD notebook? If you are then what error message are you receiving?

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