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If the system of equations x+ay=0,az+y=0  and  ax+z=0  has infinite solution then the value of a is  

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a
-1
b
1
c
0
d
no real values

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detailed solution

Correct option is A

Given equations x+ay=0,az+y=0,ax+z=0 has infinite solutions. ∴   1a001aa01=0⇒   1+a3=0    or   a=−1


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