Question 11 (Textile Engineering & Fibre Science)
If 3 and 4 are two eigen values of 
for some real numbers 
and 
, then the third eigen value of A is __2__.
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Given-
3 and 4 are two eigen value-
As we know-
Sum of the diagonal element of the matrix=Sum of the eigen value
Let,third eigen value=x
Then,
3+2+4=3+4+x
x=2 (Ans)