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• Yesterday, 22:22
Here's a link to a Desmos slope field for this ODE: https://www.desmos.com/calculator/my0rwuxl5x
3 replies | 71 view(s)
• Yesterday, 18:46
topsquark replied to a thread Jokes in Chat Room
It's a rectangular number because you write it out by making a rectangle on the number pad... -Dan
216 replies | 33267 view(s)
• Yesterday, 00:37
When you determine your integrating factor, you need only determine up to but not including the constant of integration: ...
3 replies | 71 view(s)
• February 20th, 2019, 06:55
Here's something to start you off. The axis of symmetry for the parabola y = ax^2 + bx + c is x = -\dfrac{b}{2a} and if an x-intercept is at (-2, 0)...
2 replies | 67 view(s)
• February 20th, 2019, 03:31
Hi Tan Tom, welcome to MHB! ;) If I understand correctly, you have $$(1-2j)e^{j\frac\pi 2 n} +a_3 e ^ {-(j\frac\pi 2n)} + 3 + (-1)^{n+1}=sum$$...
1 replies | 58 view(s)
• February 19th, 2019, 20:32
There are some typos/issues with your work. See if you can spot them...:)
4 replies | 84 view(s)
• February 19th, 2019, 20:03
Yep. (Nod)
9 replies | 150 view(s)
• February 19th, 2019, 18:40
Correct. (Nod)
9 replies | 150 view(s)
• February 19th, 2019, 17:48
We have the property that the product of an invertible matrix with another matrix has the same rank as that other matrix. Can we prove that...
9 replies | 150 view(s)
• February 19th, 2019, 15:45
Congratulations! :cool:
4 replies | 85 view(s)
• February 19th, 2019, 15:41
Okay, if we are to consider a solution of the form: y=t^r Then: y'=rt^{r-1} y''=r(r-1)t^{r-2}
4 replies | 84 view(s)
• February 19th, 2019, 10:41
Congratulations steenis! :D
4 replies | 85 view(s)
• February 19th, 2019, 10:27
Congratulations, and welcome to the team! (Yes)
4 replies | 85 view(s)
• February 19th, 2019, 02:24
So. Why don't you tell us what you need help with? We aren't going to do your homework for you. -Dan
2 replies | 78 view(s)
• February 19th, 2019, 00:00
Let's try $$x=5$$: \sqrt{5-1}=5-7 2=-2 Is this true?
4 replies | 77 view(s)
• February 18th, 2019, 23:57
Overview: This product is designed to allow you to specify which usergroups will have access to the user ignore system. Users who are not a member...
0 replies | 49 view(s)
• February 18th, 2019, 22:42
What do you get when you substitute each potential solution into the original equation?
4 replies | 77 view(s)
• February 18th, 2019, 20:22
MarkFL replied to a thread Starred Posts in vBulletin Products
I've installed this product on many vB sites without issue. As I said in another thread, I really recommend that you upgrade your vB. It's very old....
4 replies | 770 view(s)
• February 18th, 2019, 20:18
MarkFL replied to a thread Forum Marquee in vBulletin Products
Please send me the login credentials by PM to an admin account on your site, and I will see if I can figure out what the issue on your site is. You...
2 replies | 569 view(s)
• February 17th, 2019, 13:36
Suppose less than 2 columns of $B$ are not in the null space of $A$. Then at least 4 columns are in the null space. What is the rank of $AB$ then?...
9 replies | 150 view(s)
• February 17th, 2019, 12:24
Hey mathmari!! That's about the nullity of $B$. It's not related to the nullity of $A$ is it? (Worried) Since the rank of $A$ is $2$, its null...
9 replies | 150 view(s)
• February 17th, 2019, 09:24
Hi SigmaS, welcome to MHB! ;) In higher level math we don't always deal with regular multiplication and addition. Even then, PEMDAS is usually...
1 replies | 90 view(s)
• February 16th, 2019, 05:02
So this is what it looks like: \begin{tikzpicture} \newcommand{\coordinates}{ \draw (0,-2) grid (6,2); \draw (0,0) -- (6.4,0) node{}; ...
3 replies | 132 view(s)
• February 15th, 2019, 17:10
How many PIN codes are possible...can you apply the fundamental counting principle to answer this question?
2 replies | 217 view(s)
• February 15th, 2019, 16:58
Other than a lack of appropriate parentheses I don't see anything wrong with your work. It's entirely possible that the given answer is in error.
3 replies | 87 view(s)
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