Q. 29

# If A=is not invertible then λ=?

A. 2

B. 1

C. -1

D. 0

Answer :

=

│A│=0

1(2 x 1 – 5 x1) - (1 x 1 – 5 x 2) + 2 ( 1x1 – 2x 2) = 0

-3+9 λ -6 = 0

9 λ = 9

λ = 1

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