- #1

JenniferBlanco

- 47

- 0

Hi,

Can someone please help me out and guide me?

http://img167.imageshack.us/img167/3892/dscn8321rn1.jpg

Shown above

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

f'(x)= 2/x

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

ln(x)^2= 2

e^2=x^2

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

Can someone please help me out and guide me?

## Homework Statement

http://img167.imageshack.us/img167/3892/dscn8321rn1.jpg

## Homework Equations

Shown above

## The Attempt at a Solution

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

f'(x)= 2/x

__Ans:__All real numbers except for 0b) -2 +ln (x)^2 =0

ln(x)^2= 2

e^2=x^2

__Ans:__x = +-ec) I have no idea how to do this. Do I have to differentiate?-Jen

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