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• Today, 03:50
That works. (Nod) Note that $f(x)=\frac{1}{3}(x-2)^2e^{x/3}$ is hard to match with a line, since it has an exponential function in it. However,...
3 replies | 38 view(s)
• Yesterday, 17:20
Hey mathmari!! We could, but perhaps the intersection points are "nice" points. What are the potentially nice points? (Wondering)
3 replies | 38 view(s)
• Yesterday, 09:27
Yep. (Nod)
4 replies | 74 view(s)
• April 7th, 2020, 17:57
When I throw it at Octave online, I get: So it seems it is none of the above, but the answer $3$ is close. For reference, I have re-encoded...
1 replies | 72 view(s)
• April 7th, 2020, 14:20
Let $f:\mathbb R\to \mathbb R$ be a twice-differentiable function such that $f(x)+f^{\prime\prime}(x)=-x|\sin(x)|f'(x)$ for $x\geq 0$. Assume that...
1 replies | 72 view(s)
• April 6th, 2020, 16:33
What do you mean "there is no graph on the positive side"? Of couse there is.
6 replies | 107 view(s)
• April 6th, 2020, 16:12
How many "capsules" are there on the Ferris wheel?
2 replies | 73 view(s)
• April 6th, 2020, 11:34
Hey mathmari!! This is an example where Newton-Raphson can have problems if we are not careful. If we pick a starting value that is too far from...
4 replies | 74 view(s)
• April 6th, 2020, 10:30
\frac{\left(x\sin\left(\pi\left(x-1\right)\right)\right)}{e^{x/9}(x-1)} The above graph shows that the function repeats its value at $x=1$ when $x$...
4 replies | 74 view(s)
• April 6th, 2020, 10:08
I'm not sure what book you're using or what theorems you my have come across in your studies, so I will quote the two we'll be needing here....
3 replies | 347 view(s)
• April 6th, 2020, 00:28
Hi Alex224, Are you still interested in a solution to this problem? I have something worked out and want to make sure you're still interested...
3 replies | 347 view(s)
• April 5th, 2020, 10:37
I substituted $n=\frac 1{x^2}$, which also means that $x^2=\frac 1 n$. So we get $\Big(1 + \frac 32 x^2\Big)^{1/x^2} = \Big(1 + \frac 32 \cdot \frac... 7 replies | 289 view(s) • April 5th, 2020, 09:14 It's like this: $$\Big(1-\frac 12 x^2 + \ldots\Big)\Big(1+\frac 12 (2x)^2 - \ldots\Big)\\ =1\cdot 1 -\frac 12 x^2 \cdot 1+1\cdot \frac 12 (2x)^2 -... 7 replies | 289 view(s) • April 5th, 2020, 07:04 The series expansion of \cos x = 1 - \frac 12x^2 + \ldots. And the expansion of \frac 1{1-x} = 1+x+x^2+\ldots So:$$\frac{\cos(x)}{\cos(2x)}... 7 replies | 289 view(s) • April 4th, 2020, 04:14 This is actually a proof of (ii)$\Rightarrow$(iii) in Lemma 3.2. So we are assuming that (ii) holds. In particular, since$\overline{ f(A) }$is... 1 replies | 250 view(s) • April 3rd, 2020, 22:31 I am reading Aisling McCluskey and Brian McMaster: Undergraduate Topology, Oxford University Press, 2014... ... and am currently focused on Chapter... 1 replies | 250 view(s) • April 2nd, 2020, 12:25 Klaas van Aarsen replied to a thread f in Calculus It appears the answer is: dkm Acronym for "don't kill me". Often used when somebody says something that somebody else finds really funny,... 5 replies | 360 view(s) • April 2nd, 2020, 11:21 HallsofIvy replied to a thread f in Calculus ??what?? 5 replies | 360 view(s) • April 1st, 2020, 07:35 HallsofIvy replied to a thread Cathode and Anode in Chemistry You can blame Benjamin Franklin and others of that time! When initially studying static electricity and the way it moves from one place to anther... 2 replies | 351 view(s) • April 1st, 2020, 06:35 Not quite, although you started correctly. The limit in this case is as$x\to\infty$, so you want to see what happens when$x$gets large. This means... 3 replies | 349 view(s) • March 31st, 2020, 14:52 Hi Goody, and welcome to MHB! To prove that \lim_{x\to\infty}\frac{x-1}{x+2} = 1, you have to show that, given$\varepsilon > 0$, you can find$N$... 3 replies | 349 view(s) • March 30th, 2020, 05:31 Let's take a look at a couple of examples. If$f(x)=x$, then$f'(x)=1$and$f''(x)=0$. So$\lim\limits_{x\to +\infty}f'(x)\ne 0$, isn't it?... 21 replies | 547 view(s) • March 30th, 2020, 04:26 Yep. (Nod) And no, nothing more specific. 21 replies | 547 view(s) • March 30th, 2020, 03:32 I believe so yes. Consider$f(x)=\ell\$. It satisfies all conditions, doesn't it? (Wondering) And it is monotone instead of strictly monotone. To...
21 replies | 547 view(s)
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20 Visitor Messages

1. Hi Peter,

Thank you for pointing this out to me. I will talk it over with the staff.

In the future there is a "report" button for posts which will create a thread in the staff forum for us to review. This is just for your convenience and to keep things less public if you like. I don't mind you reaching out to me in any way that you like.

Best,
Jameson
2. Hello Peter,

When I first saw that post, I saw that Adrian (Ackbach) had replied to it, so I didn't think much about it. The user to whom Wilmer was addressing his post was already on staff radar as being a potential spammer. Wilmer's posting demeanor can be a bit rough sometimes, but he means no harm as far as I can tell.
3. Sometimes editing a thread title is an issue, but the issue is with vBulletin. If you ever want to change a thread title, and can't, just let me know and I can fix it.
4. Hey Peter!

I edited your post to remove the duplicate content. Sorry for the late reply, I was busy "powering through" a tedious 3 hour project.
5. Glad to hear that resolved the issue! I thought perhaps forcing your browser to reload the script by removing it from your cache might do the trick.
6. Hmmm...have you tried clearing your cache on your iPad?
7. Hey Peter,

No, there have been no changes in that regard, at least that I know of. Do you visit any other sites that use MathJax? If so does it render there?

Best Regards,

Mark.
8. Good deal, Peter! I wish I had a nickel for every time a problem is corrected by ditching IE and using a modern standards compliant browser.
9. I would try another browser...IE is notorious for being problematic.
10. Hello Peter,

No changes to composing posts have been made. What browser are you using? What OS?
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