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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, 18:39
Olinguito replied to a thread Jokes in Chat Room
Such a number is a cyclic permutation of $\overline{abcd}$ where $$a\ =\ a \\ b\ =\ a+k \\ c=a+k+l \\ d=a+l$$ where $a$ is the bottom-left digit...
216 replies | 33267 view(s)
• Yesterday, 17:46
Ackbach replied to a thread Jokes in Chat Room
Excellent!
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, 11:04
Congratulations on a well-deserved promotion, steenis!
4 replies | 85 view(s)
• February 19th, 2019, 11:00
Here is this week's POTW: ----- If $x^2-x-1$ divides $ax^{17}+bx^{16}+1$ for integer $a$ and $b$, find the possible value of $a-b$. ----- ...
0 replies | 66 view(s)
• February 19th, 2019, 10:58
Congratulations to castor28 for his correct solution(Cool), which you can find below: There is an obvious solution $x=y=0$; furthermore, as the...
1 replies | 166 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, 10:21
steenis has shown wonderful acumen in posting great math help, and so it is with great pleasure that we announce the awarding of the MHB Math Helper...
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)
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