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Engineering Maths · Q127

Linear Algebra

Engineering and GATE · Engineering Maths · question 127

Q127

The matrix \[ [ array*20c 1&2&4 \\ 3&0&6 \\ 1&1& p array ]\] has one eigen value equal to 3. The sum of the other two eigen values is

The matrix \left[ {\begin{array}{*{20}{c}} 1&2&4 \\ 3&0&6 \\ 1&1&{\text{p}} \end{array}} \right]  has one eigen value equal to 3. The sum of the other two eigen values is
A.
p
B.
p - 1
C.
p - 2
Answer
D.
p - 3

Answer: Option C

Solution

Answer: Option C
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