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MarkFL
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Today,
04:25
MarkFL
replied to a thread
Converting plain text to LaTeX
in
Math Formulas (MathJax)
The easiest way, since you've already typed out the equation, would be to select the text representing the equation and then clicking the $\sum$...
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3 replies | 54 view(s)
Yesterday,
14:58
MarkFL
replied to a thread [SOLVED]
x4.01 Find an equation for the level surface of the function
in
Calculus
Yes, so the equation of the level surface would be: x+e^{y+z}=37
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3 replies | 69 view(s)
November 21st, 2017,
22:28
MarkFL
replied to a thread [SOLVED]
x4.01 Find an equation for the level surface of the function
in
Calculus
Basically, you want: f(x,y,z)=f\left(1,\ln(4),\ln(9)\right) So, what do you get?
see more
3 replies | 69 view(s)
November 21st, 2017,
15:48
MarkFL
replied to a thread
Post Body CSS For Specified Users
in
vBulletin Products
Update - Version 1.2.1: More bug fixes.
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2 replies | 69 view(s)
November 21st, 2017,
04:00
MarkFL
replied to a thread
Post Body CSS For Specified Users
in
vBulletin Products
Update - Version 1.2: Minor bug fixes.
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2 replies | 69 view(s)
November 20th, 2017,
17:24
MarkFL
replied to a thread
Help with a Derivative
in
Calculus
Yes, and for clarity that would be: Can you explain why the smaller root is an unstable equilibrium while the larger root is stable.
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15 replies | 243 view(s)
November 20th, 2017,
17:09
MarkFL
replied to a thread
Help with a Derivative
in
Calculus
Oops...I failed to recall that I factored out a negative sign...so yes it is the other way around. (Bandit)
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15 replies | 243 view(s)
November 20th, 2017,
16:50
MarkFL
replied to a thread
Help with a Derivative
in
Calculus
What I would do here, if we are to look at the stability of the equilibria, is write: rP(K-P)-H=-\left(rP^2-rKP+H\right) The roots, by the...
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15 replies | 243 view(s)
November 20th, 2017,
03:39
MarkFL
replied to a thread
Help with a Derivative
in
Calculus
We see that r\d{P}{t} is common to both terms, so we have: ...
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15 replies | 243 view(s)
November 20th, 2017,
03:16
MarkFL
replied to a thread
Help with a Derivative
in
Calculus
If you are differentiating w.r.t $t$, then using the product rule, you would have: ...
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15 replies | 243 view(s)
November 19th, 2017,
22:28
MarkFL
replied to a thread
Combinations Question
in
Other Topics
That would be the correct number if the order in which the committee was chosen mattered, but in this case order doesn't matter. N={10 \choose...
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5 replies | 80 view(s)
November 19th, 2017,
22:21
MarkFL
replied to a thread
Combinations Question
in
Other Topics
Yes, that's what I was suggesting. :)
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3 replies | 61 view(s)
November 19th, 2017,
22:10
MarkFL
replied to a thread
Possible Combinations
in
Pre-Algebra and Algebra
No, not quite...you have 5 sandwich options, and then for the second option, you have 3 + 4 options: N=5(4+3)=\,?
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3 replies | 55 view(s)
November 19th, 2017,
17:55
MarkFL
replied to a thread
Inequality
in
Challenge Questions and Puzzles
My solution: S=\sum_{k=1}^n\left(\frac{1}{k^2}\right) We may write for $3\le n$: S<\frac{5}{4}+\int_2^n x^{-2}\,dx=\frac{7}{4}-\frac{1}{n} ...
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2 replies | 74 view(s)
November 19th, 2017,
13:18
MarkFL
replied to a thread
Matlab code for another Gillespie (Predator/Prey) type reaction. Edit the code as needed!
in
Mathematics Software and Calculator Discussion
Did you try zipping the file before uploading it?
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6 replies | 97 view(s)
November 18th, 2017,
16:07
MarkFL
replied to a thread
Suggestion for product
in
vBulletin Products
I've worked this into a vB product, which can be found here: DB Error Suppression Note: I've installed this here at MHB, and set the...
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6 replies | 118 view(s)
November 18th, 2017,
16:04
MarkFL
started a thread
DB Error Suppression
in
vBulletin Products
Overview: This product, upon installation, will make a backup copy of your "includes/class_core.php" named "includes/class_core_orig.php" and will...
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0 replies | 32 view(s)
November 18th, 2017,
14:19
MarkFL
replied to a thread
Suggestion for product
in
vBulletin Products
I was looking over the core file more closely, and I found that vB already has an error suppression algorithm in place (I don't know when this was...
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6 replies | 118 view(s)
November 18th, 2017,
00:01
MarkFL
replied to a thread
Suggestion for product
in
vBulletin Products
Unfortunately, none of the code provided in that thread works correctly here. (No)
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6 replies | 118 view(s)
November 17th, 2017,
15:39
MarkFL
replied to a thread
Inverse and differentation of an equation
in
Differential Equations
I would have first dealt with the question regarding why the given function is injective. We find: f'(x)=6x^2+7 Since...
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15 replies | 249 view(s)
November 17th, 2017,
12:29
MarkFL
replied to a thread
Suggestion for product
in
vBulletin Products
According to the product thread, the code that has to be added to the core file is different for version 3.x, but someone has provided the change....
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6 replies | 118 view(s)
November 17th, 2017,
01:51
MarkFL
replied to a thread
Inverse and differentation of an equation
in
Differential Equations
What I had in mind, is to look at the function's first derivative. If this derivative never changes sign, that is, has no real roots, or no real...
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15 replies | 249 view(s)
November 17th, 2017,
01:32
MarkFL
replied to a thread
Suggestion for product
in
vBulletin Products
Hey Jameson, I found something that should work for us, as far as I can tell, here: Suppress-o-matic - Stop database error spam It requires...
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6 replies | 118 view(s)
November 16th, 2017,
22:55
MarkFL
replied to a thread
User-enabled quotes within quotes
in
Questions, Comments, and Feedback
Hey Greg, We discussed having nested quotes about 4 years ago here: Using the Multi-Quote This Message feature If you read through that...
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1 replies | 32 view(s)
November 16th, 2017,
20:55
MarkFL
started a thread
Firefox Quantum
in
Chat Room
Earlier today, when I saw that Firefox was installing an update when I fired it up, I did my usual groaning facepalm and wondered what I might find...
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3 replies | 107 view(s)
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November 23rd, 2017
13:05 -
MarkFL
clicked Thanks for this post:
Re: Integral challenge
by
lfdahl
An alternative solution:...
12:49 -
RTCNTC
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Re: Solve for x
by
MarkFL
Solve the equation for...
10:05 -
anemone
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Re: x4.01 Find an equation for the level surface of the function
by
MarkFL
plug in would be ...
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anemone
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Re: Solve for x
by
MarkFL
Solve the equation for...
08:43 -
Joppy
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Re: Solve for x
by
MarkFL
Solve the equation for...
November 22nd, 2017
22:10 -
MarkFL
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Re: Integral challenge
by
lfdahl
Solution using complex...
21:40 -
MarkFL
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Re: Polynomial with five roots
by
lfdahl
Here´s the suggested...
15:58 -
karush
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Re: x4.01 Find an equation for the level surface of the function
by
MarkFL
plug in would be ...
14:58 -
MarkFL
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Re: x4.01 Find an equation for the level surface of the function
by
karush
Basically, you want: ...
14:34 -
karush
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Re: x4.01 Find an equation for the level surface of the function
by
MarkFL
Basically, you want: ...
14:13 -
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Re: Forum/Thread Blurbs
by
MarkFL
Update - Version 1.5: ...
12:41 -
BrettC
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Post Body CSS For Specified Users
by
MarkFL
Overview: This...
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MarkFL
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Re: Complex Variables - Legendre Polynomial
by
Ackbach
So, we have...
12:21 -
MarkFL
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Re: Complex Variables - Legendre Polynomial
by
joypav
Thank you! (for the...
08:25 -
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Re: Post Body CSS For Specified Users
by
MarkFL
Update - Version 1.2.1:...
08:25 -
anemone
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Re: x4.01 Find an equation for the level surface of the function
by
MarkFL
Basically, you want: ...
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MarkFL
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Problem of the Week #260 - Nov 21, 2017
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Euge
Here is this week's...
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MarkFL
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Re: Problem of the Week #259 - Oct 31, 2017
by
Euge
No one answered this...
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MarkFL
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Re: Problem of the Week #259 - Oct 31, 2017
by
Euge
I'm going to give one...
November 21st, 2017
22:54 -
Jameson
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Re: Post Body CSS For Specified Users
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Update - Version 1.2: ...
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