Asked by sh

Find the derivative.
f(x)=(1+logᴈx)/x
f'(x)=[1-ln3-logᴈx (ln3)]/(x²ln3)

How do you simplify it further? Thanks.

Answers

Answered by drwls
Whatn is the ᴈ symbol supposed to represent? Why do you have both ln and log terms? Do they have the same base?
Answered by Reiny
I would change the log<sub>3</sub>x to
lnx/ln3

then y = (1 + lnx/ln3)/x
= 1/x + lnx/(ln3x)

dy/dx = -1/x^2 + [(ln3)x((1/x) - x(ln3)]/x^2
= -1/x^2 + [(ln3)x(1/x) - (lnx)(ln3)]/((ln3)^2(x^2))

leaving any further simplification up to you
Answered by drwls
sh: Your "subscript 3 symbol" showed up as a square on my computer. Hence the confusion.
Answered by sh
I understand now, thanks! I changed the log to, 1/xln3 instead.
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