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topsquark
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topsquark
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Join Date
08-27-2012
Last Activity
Today
05:17 AM
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Today,
05:15 AM
topsquark
replied to a thread
Help me please!
in
Intermediate/Advanced Algebra
Nice! -Dan
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6 replies | 241 view(s)
Yesterday,
06:18 PM
topsquark
replied to a thread
80 degrees
in
Geometry and Trig
@tkhunny: The question about the LaTeX code failing was recently posted. The word "angle" automatically connects to a link which screws up the...
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10 replies | 241 view(s)
Yesterday,
03:38 AM
topsquark
replied to a thread
How would one go about solving this problem?
in
Intermediate/Advanced Algebra
And the winner of the most psychic helper of the day goes to tkhunny. Good catch. -Dan
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6 replies | 173 view(s)
01-17-2019,
01:03 AM
topsquark
replied to a thread
Can anyone explain me what is meaning of -1/Δ in the equation attached in image?
in
Arithmetic
It would help to have some context. Can you please post the whole question? Specifically, what do the different variables represent. -Dan
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1 replies | 235 view(s)
01-16-2019,
01:00 AM
topsquark
replied to a thread
Proving that lim(x,y)->(0,0) (x^2 + x|y|)/sqrt(x^2 + y^2) = 0
in
Calculus
Yes, you can approach it that way as well. So long as your result comes out to be "0" no matter what m is (what about approaching with a vertical...
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4 replies | 375 view(s)
01-15-2019,
08:17 PM
topsquark
replied to a thread
Proving that lim(x,y)->(0,0) (x^2 + x|y|)/sqrt(x^2 + y^2) = 0
in
Calculus
This one just screams "polar coordinates" to me. Try subbing x =r~cos( \theta ) and y = r~sin( \theta ). Then you simply have a limit as r \to 0. ...
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4 replies | 375 view(s)
01-15-2019,
08:08 PM
topsquark
replied to a thread
This question makes zero sense
in
Geometry and Trig
I knew that. Really, I did. I, um, was ... testing you! Yeah, I was testing your reading comprehension. Yeah, that's what I was doing. -Dan
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15 replies | 612 view(s)
01-15-2019,
08:01 PM
topsquark
replied to a thread
Negative roots when simplifying surds
in
Pre-Algebra
When I see stuff like "i"s under a radical I go straight over to the exponential format. \sqrt{-16 i } = \sqrt{16} \cdot \sqrt{-i} = 2 \cdot...
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20 replies | 881 view(s)
01-15-2019,
05:49 PM
topsquark
replied to a thread
how to simplify 784^2/3
in
Pre-Algebra
Fractional exponents follow the same rules as integers. \left ( x^a \right ) ^b = x^{ab}. (This also works for exponents that are real or complex.)...
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4 replies | 290 view(s)
01-15-2019,
05:44 PM
topsquark
replied to a thread
This question makes zero sense
in
Geometry and Trig
I hate to bring this up but am I the only one that has noted that the "cylinder" on top of the sphere isn't really a cylinder? The bottom of the...
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15 replies | 612 view(s)
01-14-2019,
07:31 PM
topsquark
replied to a thread
Rosary and Penance - https://www.freemathhelp.com/forum/threads/114104-what-is-happen
in
Math Odds & Ends
My Dad used to work in the ER when he was putting himself through College. He wasn't in the medical field but they put him to work doing minor...
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30 replies | 679 view(s)
01-14-2019,
07:27 PM
topsquark
replied to a thread
Force Vectors
in
Calculus
Congrats! Hey, if you are feeling up to it could you write out your solution? It might help someone else down the line. -Dan
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6 replies | 312 view(s)
01-14-2019,
01:08 PM
topsquark
replied to a thread
GEOMETRY problem
in
Geometry and Trig
Now me, I'm bilingual in English and Calculus. -Dan
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23 replies | 769 view(s)
01-13-2019,
09:38 PM
topsquark
replied to a thread
Rosary and Penance - https://www.freemathhelp.com/forum/threads/114104-what-is-happen
in
Math Odds & Ends
It was all the accumulated detention periods he had to attend. -Dan
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30 replies | 679 view(s)
01-13-2019,
09:37 PM
topsquark
replied to a thread
Rosary and Penance - https://www.freemathhelp.com/forum/threads/114104-what-is-happen
in
Math Odds & Ends
As it happens I had to teach myself most of what I knew about QFT. (Specifically the electro-weak sector.) I pretty much buried the room, including...
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30 replies | 679 view(s)
01-13-2019,
08:18 PM
topsquark
replied to a thread
GEOMETRY problem
in
Geometry and Trig
Go to a "flat-Earth" believer and make a large monetary bet that they can't find an edge. Then take the winnings and hire a professional engineer to...
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23 replies | 769 view(s)
01-13-2019,
08:08 PM
topsquark
replied to a thread
tan(x/2-π/2)=sqrt2 ?
in
Geometry and Trig
You mostly have it. But I'd try this: (It's a bit more direct.): tan \left ( \dfrac{x}{2} - \dfrac{\pi}{2} \right ) = \sqrt{2} arctan \left =...
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3 replies | 367 view(s)
01-13-2019,
02:46 PM
topsquark
replied to a thread
Rosary and Penance - https://www.freemathhelp.com/forum/threads/114104-what-is-happen
in
Math Odds & Ends
So I'm "the physicist" now? If you really must call me something other than Dan or topsquark then I'll let you know that I don't have a PhD, but I...
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30 replies | 679 view(s)
01-12-2019,
12:12 AM
topsquark
replied to a thread
Dan Does Physics
in
Math Odds & Ends
I've look at it again and I'll give it another shot. What the article seems to talk about when it says "inversion of spatial properties" is to...
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3 replies | 270 view(s)
01-12-2019,
12:03 AM
topsquark
replied to a thread
Rosary and Penance - https://www.freemathhelp.com/forum/threads/114104-what-is-happen
in
Math Odds & Ends
You? With a rosary? It would catch fire when you touched it! -Dan
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30 replies | 679 view(s)
01-11-2019,
04:31 PM
topsquark
replied to a thread
Physics: Electric Fields and Projectile Motion
in
Advanced Math
Bumpity bumplty bumpity! Wheeeee! :mrgreen: -Dan
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7 replies | 560 view(s)
01-11-2019,
04:29 PM
topsquark
replied to a thread
Physics: Electric Fields and Projectile Motion
in
Advanced Math
The electric field in between the capacitor plates only has a vertical component. Thus the proton is not accelerated in the horizontal direction...
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7 replies | 560 view(s)
01-10-2019,
06:37 PM
topsquark
replied to a thread
Dan Does Physics
in
Math Odds & Ends
That's a neat article. Thanks for sharing. Much of what I'm going to talk about here comes from Weinberg's "The Quantum Theory of Fields". If...
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3 replies | 270 view(s)
01-10-2019,
02:02 AM
topsquark
replied to a thread
Physics question (for Dan?)
in
Advanced Math
What is this? Pick on Dan day? :confused: The more information you need to process a signal the more you need something to focus a signal for...
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2 replies | 281 view(s)
01-10-2019,
01:50 AM
topsquark
replied to a thread
Jerk and Creep - in Mechanics - contd. from https://www.freemathhelp.com/forum/thread
in
Math Odds & Ends
There's not much to say, really. If the acceleration is not constant then we can simply call it something like a(t) and use Calculus from there. I...
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5 replies | 269 view(s)
01-09-2019,
11:45 PM
topsquark
started a thread
Jerk and Creep - in Mechanics - contd. from https://www.freemathhelp.com/forum/thread
in
Math Odds & Ends
Well thank you! I'm pleased to be here, though I don't get much chance to do my Physics-ing here. ;) -Dan
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5 replies | 269 view(s)
01-09-2019,
10:09 PM
topsquark
replied to a thread
Equation of free fall
in
Calculus
Most of the time in Introductory Physics we use the constant acceleration equations, even if it's a Calculus based class. The displacement equation...
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14 replies | 380 view(s)
01-09-2019,
04:04 PM
topsquark
replied to a thread
Equation of free fall
in
Calculus
From a Physicist's perspective: From the given equation what is a? Do you know an equation for speed in terms of the acceleration and time? -Dan
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14 replies | 380 view(s)
01-07-2019,
09:40 PM
topsquark
replied to a thread
a hard equation, please help!
in
Calculus
Nice! :cool: -Dan
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10 replies | 392 view(s)
01-05-2019,
11:32 PM
topsquark
replied to a thread
what is wrong here?
in
Intermediate/Advanced Algebra
The 700 is a constant in the formula for P(x). So in finding the difference P(16) - P(4) the constant will cancel itself out. For example, (A +...
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16 replies | 445 view(s)
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About topsquark
Basic Information
About topsquark
Biography:
Hello. My name is Inigo Montoya. You killed my father. Prepare to die.
Location:
Florian
Interests:
Math, Physics, avenging my father's death
Occupation:
Professional student. Or, you know, a swordsman
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It should be possible to explain the laws of Physics to a barmaid. - Albert Einstein
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