I have to sketch the following function:(adsbygoogle = window.adsbygoogle || []).push({});

y=x(lnx)^3

The ln scares me a bit... I have found the derivative of the function as 3(lnx)^2, and when making that equal to zero I got an anwer of around 0.7 if i remember correctly. This I guess is my critical number??? Then the second derivative is 6/x(lnx). I really am not sure if Im doing this right, especially with the ln in there. Am I on the right track? What can I now do?

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Sketching ln graph

**Physics Forums | Science Articles, Homework Help, Discussion**