A) 81
B) 1/81
C) 1/64
D) None of these
Correct Answer: B
Solution :
Since, the roots of the given equation are real. \[\therefore \] \[Disc>0\Rightarrow 16+4\text{ }lo{{g}_{3}}a\ge 0\] \[\Rightarrow \] \[{{\log }_{3}}a\ge -4\Rightarrow a\ge {{3}^{-4}}\Rightarrow a\ge 1/81\] Hence, the least value of a is\[1/81\].You need to login to perform this action.
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