what is characteristic polynomial for a matrix? Watch

Jack93o
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for a matrix A, is the characteristic polynomial = |A - I*lamda| (where I = the identity matrix)

in my textbook its like that, but in this video (http://www.youtube.com/watch?v=5_c6FV9fGV8), they've got it as |I*lamda - A|
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2710
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They are both correct.

In terms of eigenvalues you will have the same because one is just the negative of the other

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Jack93o
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(Original post by 2710)
They are both correct.

In terms of eigenvalues you will have the same because one is just the negative of the other

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thanks!
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