What is the derivative of $ln(5x)$ ?

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Answer 1 · 2015-09-08T14:23:01

Here is another way of getting the answer, using the properties of $ln$

$f(x) = ln(5x) = ln(5)+ln(x)$

$ln(5)$ is a constant , so its derivative is $0$ and we get:

$f'(x) = 0+1/x = 1/x$

Answer 2 · 2015-09-08T23:17:59

The derivative of $f(x)=ln(5x)$ is $d(f(x))/dx=(d(5x)/dx)/(5x)=5/(5x)=1/x$

What is the derivative of ln(5x)ln(5x)?