DeterminantHard

Question

The system of equation - 2x + y + z = 1, x - 2y + z = -2, x + y + λz = 4 will have no solution if

Options

A.λ = - 2
B.λ = - 1
C.λ = 3
D.none of these

Solution

ᐃ =
For no solution of system ᐃ = 0 and at least one of the ᐃx, ᐃy, ᐃz is non zero.
for ᐃ = 0, l = - 2 

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