
#1
Mar1405, 10:16 PM

P: 15

Determine all values for x for which the
matrix B =  x 3 1 9/2 x 3  2 1 1 No idea where to start. Any help? 



#2
Mar1405, 10:20 PM

Emeritus
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PF Gold
P: 2,977





#3
Mar1505, 12:45 PM

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HW Helper
P: 11,866

Why compute the determinant ???Do you know the condition a matrix must fulfil,in order to be singular...?
Daniel. 



#4
Mar1505, 01:01 PM

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P: 2,004

singular matrix 



#5
Mar1505, 01:03 PM

Sci Advisor
HW Helper
P: 11,866

I had a hunch you knew that,Galileo.I was just hoping that the OP would check the theory before attempting to solve the problem.
Daniel. 



#6
Mar1505, 06:33 PM

P: 15

Figured it out. Just got the determinent and used quadratic equation to see when x=9 and x=4, the matrix is singular



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