Q.
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a
A=a1a2a3a4a5a6a7a8a9 is singular
b
The system of equations a1x+a2y+a3z=0, a4x+a5y+a6z=0, a7x+a8y+a8z=0 has infinite number of solutions
c
B=a1ia2ia2a1 is non-singular ; where i=−1
d
None of these
answer is A.
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