Q. If $a^{l o g_{3} 7} = 9$ , then $a^{(l o g_{3} 7)^{2}}$ is equal to

226 91 Continuity and Differentiability Report Error

A

81

B

49

C

9

D

3

Solution:

$Θ a^{l o g_{3} 7} = 9$
$∴ a^{(l o g_{3} 7)^{2}} = 9^{l o g_{3} 7} = 3^{2 l o g_{3} 7} = 49$