If ax = b and by = a, then find the value of xy.

If a^x = b and b^y = a, then find the value of xy.

A 1

C a

D y

Correct Answer: Option A

দেওয়া আছে,
a^x = b ........(1)

b^y = a
⇒ (a^x)^y = a [ (1) নং হতে]
⇒ a^xy = a
∴ xy = 1