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# Variations on a Logarithm Theme

APCALC-M7GXNV

Which of the following does not have the same derivative as $y=\log_4 x$?

A

$y=\cfrac{\ln x}{\ln 4}$

B

$y=\log_{16} x^2, \hspace{.3cm} x\gt 0$

C

$y=\log_4 6x$

D

$y=\cfrac{1}{2} \log_8 x$