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• Today, 10:02
caffeinemachine replied to a thread Hi everyone! in Introductions
Hey Raisa! I am currently a PhD student in mathematics, but I was also a mechanical engineering undergrad before I switched to math. I would say that...
1 replies | 5 view(s)
• Today, 06:01
If you are allowed to use the Heron's formula, then you can do the following. Let $AB=c$, $BC=a$ and $AC=b$. Then the area of the triangle is...
1 replies | 30 view(s)
• Today, 05:37
Welcome to the forum! I think the meaning of "parameter" is different in this context. This meaning is described in the article about parametrized...
1 replies | 21 view(s)
• Yesterday, 20:12
Yes. $$= = = 1$$
3 replies | 46 view(s)
• Yesterday, 19:34
Hi FallArk! The $$notation indicates the floor function. That is, rounding down to the nearest integer below x. Btw, I prefer the notation... 3 replies | 46 view(s) • Yesterday, 18:23 Euge replied to a thread [SOLVED] How to prove continuity? in Analysis Yes. 4 replies | 59 view(s) • Yesterday, 18:19 Euge replied to a thread [SOLVED] How to prove continuity? in Analysis It's a great idea, but for this argument to work, f(c) needs to be positive. It's possible to avoid cases by setting \epsilon = \frac12\lvert... 4 replies | 59 view(s) • Yesterday, 17:49 I like Serena replied to a thread [SOLVED] How to prove continuity? in Analysis Hi FallArk! ;) Let's take the definition of continuity into account:$$\lim_{x\to c} f(x) = f(c) \ne 0 This means that for any $\epsilon>0$...
4 replies | 59 view(s)
• Yesterday, 14:13
Evgeny.Makarov replied to a thread Jokes in Chat Room
One student claimed that \ln0=e. To prove it, he typed \ln and 0 on a calculator and got the answer e. Another student had to prove that...
154 replies | 17548 view(s)
• Yesterday, 04:59
Joseph A. Gallian, in his book, "Contemporary Abstract Algebra" (Fifth Edition) defines an irreducible element in a domain as follows ... (he also...
0 replies | 34 view(s)
• Yesterday, 04:23
Thanks for the help johng ... But i am still a bit puzzled ... I think we have to show that \{ \frac{k}{ 2^n} \ | \ k.n \in \mathbb{Z} \} is...
3 replies | 51 view(s)
• Yesterday, 02:29
MarkFL replied to a thread 231.14.88 3d surface in Calculus
Multiplying through by $9+6x-8y$ and distributing the $26$, we obtain -x^2-y^2+z^2=156x-208y+234 -x^2-156x-y^2+208y+z^2=234 ...
3 replies | 53 view(s)
• February 17th, 2017, 17:44
Simplex yes. And no, we didn't need to figure out the configurations - they were given. At best it helps a bit to understand the problem statement....
11 replies | 126 view(s)
• February 17th, 2017, 16:05
Looks good. Does that mean that we're done? (Wondering)
11 replies | 126 view(s)
• February 17th, 2017, 15:20
Yes and yes. What would the objective function be? (Wondering)
11 replies | 126 view(s)
• February 17th, 2017, 14:11
Yes and yes. How many plates A and B do we need? (Thinking)
11 replies | 126 view(s)
• February 17th, 2017, 10:19
Evgeny.Makarov replied to a thread Rhombus question in Geometry
\begin{tikzpicture} \renewcommand\ss{2} \coordinate (A) at (0,0); \path (A) ++(220:\ss) coordinate (D); \path (A) ++(-40:\ss) coordinate (B);...
3 replies | 52 view(s)
• February 17th, 2017, 01:20
Can't we fit another 300x700 in the scrap at the right of size 300x1000? (Wondering)
11 replies | 126 view(s)
• February 16th, 2017, 23:12
I am reading Stephen Lovett's book, "Abstract Algebra: Structures and Applications" and am currently focused on Chapter 5 ... I need some help...
3 replies | 51 view(s)
• February 16th, 2017, 09:40
Variation on Ifdahl's solution: Let $y = x + \frac1x$. Then $\bigl(\sqrt{y+1} + \sqrt y\bigr)\bigl(\sqrt{y+1} - \sqrt y\bigr) = y+1-y = 1$....
3 replies | 123 view(s)
• February 15th, 2017, 20:29
You have two points on the graph, so you can compute the slope as follows: m=\frac{\Delta y}{\Delta x}=\frac{y_2-y_1}{x_2-x_1} Then, you can...
2 replies | 58 view(s)
• February 15th, 2017, 00:27
I like Serena replied to a thread [SOLVED] Tests in Advanced Probability and Statistics
That looks correct yes. (Nod)
16 replies | 174 view(s)
• February 14th, 2017, 23:47
Yes, the derivative of the function evaluated at the $x$-coordinate of the tangent point will give you the slope $m$ of the tangent line. :)
4 replies | 89 view(s)
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### 16 Visitor Messages

1. 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.
3. 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.
4. 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.
5. I would try another browser...IE is notorious for being problematic.
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No changes to composing posts have been made. What browser are you using? What OS?
7. Thank you for your kind words Peter, I really appreciate them. I'm always happy to help!
8. Hey Peter,

You attached 4 images, but only 3 of them were attached inline...I deleted the duplicate.

Best Regards,

Mark.
9. Hey Peter,

I am very sorry to hear that you had to undergo eye surgery, but I hope everything went well and that your recovery is complete and as speedy as possible.

Best Regards,

Mark.
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