Anything Math



06022017, 05:14 AM




RE: Anything Math
You said anything math.
"Don't answer that. A rhetorical question." 

06022017, 09:38 AM




RE: Anything Math
(05022017 12:36 AM)Kernel Sohcahtoa Wrote: IMO, at its core, mathematics is a very beautiful and awesome subject; however, I'd like to learn how other people see mathematics and what intrigues them about it. Hence, the purpose of this thread is for members to share anything mathrelated that they find interesting, cool, beautiful, etc. One of my favorite proofs is the proof that the square root of 2 is irrational (your examples above provide much of the preliminary work). Another is Euclid's proof that there are an infinite quantity of prime numbers (alternative statement of the same thing: there is no largest prime). These two proofs are well known and easily found, so I will not give the details. But here's another favorite: For any integer n, no matter how large, there exists a sequence of n consecutive nonprime integers. Furthermore, it is easy to construct such a sequence. 

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10022017, 10:25 PM




RE: Anything Math
On this day in math in 1996, history will show that the machine overlords first realized Skynet would rule the world. So did we. Are you Sarah Connor?
Deep Blue v. Kasparov #sigh 

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10022017, 10:37 PM




RE: Anything Math
When I was in high school, I hated algebra, but when we got to geometry for some reason it just clicked with me. I loved doing proofs. We were tasked with taking an exam for the state and I had the highest score ever given for the test. But if you asked me anything about geometry now, the only thing I could possibly remember is the Pythagorean Theorem.
Check out my nowdefunct atheism blog. It's just a blog, no ads, no revenue, no gods.  Atheism promotes critical thinking; theism promotes hypocritical thinking.  Me 

2 users Like WillHopp's post 
15022017, 11:27 PM




RE: Anything Math
(10022017 10:37 PM)WillHopp Wrote: When I was in high school, I hated algebra, but when we got to geometry for some reason it just clicked with me. I loved doing proofs. We were tasked with taking an exam for the state and I had the highest score ever given for the test. But if you asked me anything about geometry now, the only thing I could possibly remember is the Pythagorean Theorem. This is very common, in my experience on both sides of the situation student and teacher. Some people just "get" one more than the other. What do you think would have happened had you taken the Algebraic Geometry class? Yes, that's a "real" thing. https://en.wikipedia.org/wiki/Algebraic_geometry 

15022017, 11:37 PM




RE: Anything Math
(06022017 09:38 AM)Grasshopper Wrote:(05022017 12:36 AM)Kernel Sohcahtoa Wrote: IMO, at its core, mathematics is a very beautiful and awesome subject; however, I'd like to learn how other people see mathematics and what intrigues them about it. Hence, the purpose of this thread is for members to share anything mathrelated that they find interesting, cool, beautiful, etc. A long time ago, I had a friend who mentioned the 345 right triangle as a way to verify that one has a right angle when building something. He further stated that this was the only triangle with integer sides that was a right triangle. I hated to burst his bubble, but I had to tell him that there is an infinite number of such triangles. He and his friend looked at me like I was from Mars, or something! Hell, we were just a bunch of guys standing around drinking beer, poolside. How would they know that I had a degree in mathematical physics? Though my friend had a degree in civil engineering. 

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15022017, 11:56 PM




RE: Anything Math
If you follow the Fibonacci Sequence you approach the Golden Mean.
“I am quite sure now that often, very often, in matters concerning religion and politics a man’s reasoning powers are not above the monkey’s.”~Mark Twain “Ocean: A body of water occupying about twothirds of a world made for man  who has no gills.”~ Ambrose Bierce 

16022017, 12:58 AM




RE: Anything Math
If you're up for a fun challenge, download Euclidea to your phone. It is the fucking shit. It's all geometry puzzles.


3 users Like morondog's post 
22022017, 12:28 AM




RE: Anything Math
I need help on working out internal rates of return. The formula isn’t helping me (hurts my head).
How do I calculate the following. Initial Investment $357 Jan 1 Subsequent investments $21 Feb 21 $22 Oct 7 Final value $450 Dec 31 IRR Defined The IRR is the interest rate, also called the discount rate, that is required to bring the net present value (NPV) to zero. That is, the interest rate that would result in the present value of the capital investment, or cash outflow, being equal to the value of the total returns over time, or cash inflow. NPV= ∑ {Period Cash Flow / (1+R)^T}  Initial Investment where R is the interest rate and T is the number of time periods. IRR is calculated using the NPV formula by solving for R if the NPV equals zero. http://www.investopedia.com/ask/answers/...z4ZOQ700rP “I am quite sure now that often, very often, in matters concerning religion and politics a man’s reasoning powers are not above the monkey’s.”~Mark Twain “Ocean: A body of water occupying about twothirds of a world made for man  who has no gills.”~ Ambrose Bierce 

22022017, 02:48 AM
(This post was last modified: 22022017 04:17 AM by Robvalue.)




RE: Anything Math
Is the value of T increasing during the sum, 1, 2, 3... I imagine so? Or is it fixed as being the total number?
And I see the added cash is staggered, so would T be in months giving lots of zero terms...? I've read the article but it doesn't seem to give a lot of detail. I have a website here which discusses the issues and terminology surrounding religion and atheism. It's hopefully user friendly to all. 

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