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If A=((1,2,1),(-1,0,3),(2,-1,1)) then ch...

If `A=((1,2,1),(-1,0,3),(2,-1,1))` then characteristic equation is given by

A

`-lambda^(3) +2lambda^(2)-4lambda +18=0`

B

`lambda^(3)+2lambda^(2)+4lambda+18=0`

C

`2lambda^(3)-lambda^(2)+6lambda-2=0`

D

None of these

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A
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  7. |(1,a,a^(2)+bc),(1,b,b^(2)+ac),(1,c,c^(2)+ab)|=k(a-b),(b-c), (c-a) the...

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  8. If A=[(0, 1,0),(0, 0,1),(-c,-b,-a)] then A^(3)+aA^(2)+bA+cI is

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  14. If |(a^(2), b^(2), c^(2)),((a+lambda)^(2), (b+lambda)^(2), (c+lambda)^...

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  17. If a, b, c are sides of a scalene triangle, then the value of |(a,b,c...

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  18. Let S={((a(11), a(12)),(a(21), a(22))):a(ij) in {0,1,2},a(11)=a(22)} ...

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  19. If A is an 3xx3 non-singular matrix such that AA' = A'A and B=A^(-1)A'...

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