logₓ(5/2) = -1/2 হলে x এর মান-

logₓ(5/2) = -1/2 হলে x এর মান-

A 4/25

B √5/2

C √2/5

D 25/4

Solution

Correct Answer: Option A

ব্যাখ্যাঃ log * (5/2) = -(1/2)

=> x^-1/2 = 5/2

=> 1/x^-1/2=5/2

=> (1/x)² =(5/2)²

=> 1/x = 25/4

x = 4/25