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  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#1 Re: Introductions » Me, myself and I » Yesterday 12:17:50


Welcome to reality. What is your favorite color?

#2 Help Me ! » Equilibrium in electrostatic field » Yesterday 05:14:19

Replies: 0

A test charge is placed in a null point in an electrostatic field. Show that such an equilibrium is never stable

#4 Maths Teaching Resources » Brilliant Mathematics and Science Wikis » 2015-03-29 00:21:06

Replies: 3

Brilliant has many interesting wiki articles in Algebra, Number Theory, Geometry, Combinatorics, Calculus, Mechanics, Electromagnetism, Computer Science and Quantitative Finance.

Just for example, the combinatorics map is available here.

Here is a comprehensive list of my articles on the Brilliant Wiki: Agnishom's Wikis

#7 Re: Guestbook » Linear Interpolation of FP1 Formula - Parallel Thread » 2015-03-24 17:13:38

But shouldn't he be consdierate because that is what he did when he was of the same ge?

#8 Euler Avenue » How correct is that Feynman statement? » 2015-03-24 17:09:47

Replies: 1
Feynman wrote:

It will take you some time to understand what should happen in different circumstances. You will have to solve the equations. Each time you solve the equations, you will learn something about the character of the solutions. To keep these solutions in mind, it will be useful also to study their meaning in terms of field lines and of other concepts. This is the way you will really “understand” the equations. That is the difference between mathematics and physics. Mathematicians, or people who have very mathematical minds, are often led astray when “studying” physics because they lose sight of the physics. They say: “Look, these differential equations—the Maxwell equations—are all there is to electrodynamics; it is admitted by the physicists that there is nothing which is not contained in the equations. The equations are complicated, but after all they are only mathematical equations and if I understand them mathematically inside out, I will understand the physics inside out.” Only it doesn’t work that way. Mathematicians who study physics with that point of view—and there have been many of them—usually make little contribution to physics and, in fact, little to mathematics. They fail because the actual physical situations in the real world are so complicated that it is necessary to have a much broader understanding of the equations.

#9 Re: Guestbook » Linear Interpolation of FP1 Formula - Parallel Thread » 2015-03-24 16:15:27

Why? 20 is old enough.

Would you be annoyed with your son if he did the same?

#10 Re: Guestbook » Linear Interpolation of FP1 Formula - Parallel Thread » 2015-03-24 14:25:12

How do you think zetafunc. would have felt if his son was dating a 23-yo polish girl without notifying him?

#13 Re: Guestbook » Linear Interpolation of FP1 Formula - Parallel Thread » 2015-03-24 04:05:19

I am looking at a post where zetafunc. thinks that it is not acceptable to the common man.

#17 Re: Puzzles and Games » Mate in three? » 2015-03-23 21:10:16

1. Rh1 Rf8
2. Rh3 Rd8
3. Rh1 Rf8
4. Rh3 Rd8

#18 Re: Help Me ! » Fraction conundrum solve this and u are a real genius » 2015-03-23 20:15:38

May I get another chance to prove myself a genius?

#19 Re: Puzzles and Games » Mate in three? » 2015-03-23 20:14:10

anonimnystefy wrote:

So, all the variations end up with a mate?

There are also many ways to iterate the game infinitely

#20 Re: Guestbook » Linear Interpolation of FP1 Formula - Parallel Thread » 2015-03-23 20:10:49

So, you're a man of high standards.

Oh, why is it unacceptable to see a girl who is 23 while I am 20?

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