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What is the derivative of log(x)?

1 Answer

Apr 20, 2015

That depends on what base you intend.

#logx# is sometimes used for #log_10x#, #log_ex# and #log_2x#

#d/dx (log_b x) = 1/x 1/log_ex#

Using, #lnx = log_ex#, we write:

#d/dx (log_b x) = 1/x 1/lnb#

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