CBSE Class 12-science Answered
eigen vectors
Asked by dakarapuaditya123 | 26 Dec, 2022, 08:20: PM
Expert Answer
Characterstic equation | A - λ I | = 0
where λ is eigen value and I is unit matrix of order ( 3 × 3 )
Hence eigen values are λ= 1, 4, 4
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Let eigen value equation is and eigen vector
Then we get the matrix equation for λ=1
From above matrix equation , we get
or ................................(1)
or .................................(2)
or .................................(2)
Let x1 = 1
By adding eqn.(1) and (2) , we get 3 x1 + 3 x2 = 0 or x2 = -1
If we substitute x1 = 1 , x2 = -1 in any one of above equations , we get x3 = -1
Eigen vector for eigen value λ =1 is
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Let eigen value equation is and eigen vector
Then we get the matrix equation for λ=4
From above matrix equation , we get
or ................................(4)
or .................................(5)
or .................................(6)
We see that eqn.(4) , (5) and (6) are not linearly independent , they are one and the same equation
Let x1 = 1 , X2 = 1 then x3 = 0
Eigen vector for eigen value λ =4 is
Answered by Thiyagarajan K | 27 Dec, 2022, 12:07: AM
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