Again, this is another post for my own amusement/memory

The derivative of is – but I could find no proof for that online, so I worked out my own (admittedly this is not a complex problem).

Let , then

We know so

Hence, to restate this in the standard manner

## One response to “Derivative of ln(x)”

[…] again we start from the proposition that there exists a number such that and hence (see here for why the second follows from the […]