logx1/81 = -4 হলে x এর মান কত?

A -4

B

C ¼

D 3

Solution

Correct Answer: Option D

দেওয়া আছে,
logₓ(1/81) = -4
বা, x⁻⁴ = 1/81
বা, 1 / x⁴ = 1 / 81 
বা, x⁴ = 81 
বা, x⁴ = 3⁴ 
বা, x = 3 

Practice More Questions on Our App!

Download our app for free and access thousands of MCQ questions with detailed solutions