Question

Find the value of X. with the help log function

Answer 1

81=x⁴
3⁴=81
x=3 is rt answer
basic principle is
if x ki power m =n
then,log of n with base x=m

Answer 2

$log_{x}(81) = 4 \\ 81 = {x}^{4} \\ 81 = {3}^{4} \\ therefore \: x \: = 3$
hope it helps you