答案:C
解析:
Choice (C) is correct. Since 4 = 2^2, it follows that 4^b = (2^2)^b = 2^(2b). Therefore, 2^a = 4^b = 2^(2b), from which it follows that a = 2b.
您现在的位置: 首页 > SAT > SAT每日一题 > 正文
答案:C
解析:
Choice (C) is correct. Since 4 = 2^2, it follows that 4^b = (2^2)^b = 2^(2b). Therefore, 2^a = 4^b = 2^(2b), from which it follows that a = 2b.