Easy
1 point
ID: #23557
Question
2^x + 2^(1-x) = 3 হলে, x = কত?
Options
1
(1,2)
Correct Answer
2
(0,2)
Correct Answer
3
(1,3)
Correct Answer
4
(0,1)
Correct Answer
Explanation
ধরি 2^x = a. তাহলে a + 2/a = 3 => a² - 3a + 2 = 0 => (a-1)(a-2) = 0. a=1 হলে 2^x=1 => x=0. a=2 হলে 2^x=2 => x=1. উ: (0, 1)।