# curve sketching [Solved!]

**phinah** 02 Nov 2017, 17:09

### My question

Wrote you earlier today. Confusion might come from Example 4. Three lines before the graph for that example you write if x > -1 the second derivative is greater than 0. Should it be if x >1? Just wondering.

### Relevant page

5. Curve Sketching using Differentiation

### What I've done so far

X

Wrote you earlier today. Confusion might come from Example 4. Three lines before the graph for that example you write if x > -1 the second derivative is greater than 0. Should it be if x >1? Just wondering.

Relevant page
<a href="https://www.intmath.com/applications-differentiation/5-curve-sketching-differentiation.php">5. Curve Sketching using Differentiation</a>
What I've done so far

## Re: curve sketching

**Murray** 03 Nov 2017, 22:43

@phinah: Yikes! Thank you for pointing out the typo - you are totally correct.

I fixed it just now, (You may need to refresh that page to see the update).

Sorry about the confusion!

X

@phinah: Yikes! Thank you for pointing out the typo - you are totally correct.
I fixed it just now, (You may need to refresh that page to see the update).
Sorry about the confusion!

You need to be logged in to reply.