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How to multiply identity matrix with a variable?

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Avinash Bhatt
Avinash Bhatt el 13 de Mayo de 2019
Comentada: John D'Errico el 13 de Mayo de 2019
I am unable to multiply a variable with a 16X16 identity matrix for implementing det|A-XI|. Please show me how it is done.
  1 comentario
John D'Errico
John D'Errico el 13 de Mayo de 2019
A variable? A symbolic variable?
You define it as symbolic, then you use * to multiply. What is the problem? What did you try?
I would point out that almost certainly, this is going to be a bad idea, as computing a symbolic determinant of a 16x16 matrix will be very computationally nasty.
If you don't know how to multiply a variably times a matrix, this strongly suggests you need to read the getting started tutorials.

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