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Equation point from a matrix

  • Thread starter Lord Dark
  • Start date
  • #1
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0

Homework Statement


Good evening everyone,, I have the following problem:
attachment.php?attachmentid=24867&stc=1&d=1270403123.png



The Attempt at a Solution



disregarding the digit ,, he's giving me P(x) and want P(A) but A is a matrix ,, should I get the determinant of A then apply it in the equation ?? or it has some idea I need to know ??
 

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Answers and Replies

  • #2
Office_Shredder
Staff Emeritus
Science Advisor
Gold Member
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You know how to multiply matrices

You know how to add matrices

I dare say maybe you can just plug in A directly and get an answer. This is pretty common, giving a polynomial where you think the input is supposed to be a number, but then you plug in matrices instead to see what you get
 
  • #3
33,508
5,194
And since P(A) involves matrices, not numbers, be sure to use I in place of 1 in your formula for P(A).
 
  • #4
121
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aha, got it ... Really it's very easy ,, I feel stupid :shy:

Thanks very much guys
 
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