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In mathematics, the log2 n(binary logarithm ) is the logarithm to the base 2.
The binary logarithm of n is the power to which the number 2 must be raised to obtain the value n. It is the inverse function of n 2n.
When you want a group of Log Base 2 result, you input "2,3,4,5", it means "log22 log23 log24 log25", the result will be "1 1.584963 2 2.321928".