IntMath Home » Forum home » Applications of Differentiation » curve sketching

# curve sketching [Solved!]

### 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 &gt; -1 the second derivative is greater than 0.  Should it be if x &gt;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

@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).

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