Hi,(adsbygoogle = window.adsbygoogle || []).push({});

Can someone please help me out and guide me?

1. The problem statement, all variables and given/known data

http://img167.imageshack.us/img167/3892/dscn8321rn1.jpg [Broken]

2. Relevant equations

Shown above

3. The attempt at a solution

a) f(x) = -2 +ln(x)^2

f'(x)= 2/x

Ans: All real numbers except for 0

b) -2 +ln (x)^2 =0

ln(x)^2= 2

e^2=x^2

Ans: x = +-e

c) I have no idea how to do this. Do I have to differentiate?

-Jen

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

Dismiss Notice

Join Physics Forums Today!

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

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

# Homework Help: Natural Logs+Calc related question

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