If a and B are known to be real numbers, what is the condition that "a power of 2 > B power of 2" is "LNA > LNB"

In order to satisfy 2 ^ a ＞ 2 ^ B, we only need a ＞ B,
In order to satisfy LNA ＞ LNB 2, a ＞ B ＞ 0
That is, ② → ①, but ① does not → ②
Therefore, ① is a necessary and insufficient condition for ②

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