I'm really having some difficulty understanding how to find the derivative of log functions - I keep trying these homework questions and getting most of them wrong and I'm really starting to get annoyed.
Here's a question, for example:
I did attempt it several times, different ways but each time it was wrong...
Any hints on how to go about these sorts of questions? I know that you're supposed to use the chain rule but it's just not working for me for some reason.
Any help's appreciated!
Alright...so, I'd go:
ln(4x)' * x^4 - ln(4x) * x^4' / (x^4)^2
1/4x * x^4 - ln(4x) * 4x^3 / (x^4)^2
x^4/4x - ln(4x) * 4x^3 / (x^8) [I think you would change it to x^8?]
I get stuck at this point though...would I just leave it like that and then apply the chain rule?