Math Is Fun Forum

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

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#1652 Re: Coder's Corner » Coding » 2012-10-17 02:12:45

Just developing simple programs. I mainly program websites nowadays so...

#1653 Re: This is Cool » Pascal's square » 2012-10-16 14:20:51

Haha. I was laughing, but I am handicapped.

#1654 Re: Coder's Corner » Coding » 2012-10-16 13:48:31

Why thank-you. I don't use Java to make applets so...

#1656 Re: Jokes » As the forum section's name suggests... » 2012-10-16 10:11:11

** meaning he, or rather the teacher.

#1657 Jokes » As the forum section's name suggests... » 2012-10-16 10:10:10

ShivamS
Replies: 2

Mathematics is made of 50 percent formulas, 50 percent proofs, and 50 percent imagination.

The following problem can be solved either the easy way or the hard way.

Two trains 200 miles apart are moving toward each other; each one is going at a speed of 50 miles per hour. A fly starting on the front of one of them flies back and forth between them at a rate of 75 miles per hour. It does this until the trains collide and crush the fly to death. What is the total distance the fly has flown?

The fly actually hits each train an infinite number of times before it gets crushed, and one could solve the problem the hard way with pencil and paper by summing an infinite series of distances. The easy way is as follows: Since the trains are 200 miles apart and each train is going 50 miles an hour, it takes 2 hours for the trains to collide. Therefore the fly was flying for two hours. Since the fly was flying at a rate of 75 miles per hour, the fly must have flown 150 miles. That's all there is to it.

When this problem was posed to John von Neumann, he immediately replied, "150 miles."
"It is very strange," said the poser, "but nearly everyone tries to sum the infinite series."
"What do you mean, strange?" asked Von Neumann. "That's how I did it!" 

In his lecture, ** formulated a theorem and said: "The proof is obvious". Then he thought for a minute, left the lecture room, returned after 15 minutes and happily concluded: "Indeed, it is obvious!"

#1658 Re: Introductions » Introduction » 2012-10-16 10:05:46

Hi. Forgot to say hello before.

#1660 Re: Jai Ganesh's Puzzles » 10 second questions » 2012-10-16 09:56:45

Wait, was my last answer correct?

#1661 Formulas » Limits » 2012-10-16 09:55:38

ShivamS
Replies: 13

Limits are weird. Alas, now no one can change the notation from:
lim f(x) = b to lim f(x) = ->b
x->a              x->a

#1662 Re: Puzzles and Games » New Puzzles 6 » 2012-10-16 09:53:20

Nice puzzles. Love broken sticks.

#1663 Coder's Corner » Coding » 2012-10-16 09:52:14

ShivamS
Replies: 127

What languages do you guys code in? As for me: BASIC, JB(Just Basic), RB (RunBasic), VB (Visual Basic), COBOL, FoxPro, Liberty Basic (LB), Python, C#, C, C++ and Java. That was compiler and IDE based. As for web: HTML (no duh!), CSS (no duh x2! (not factorial)), PHP, ASP.net, JS, Ajax and Flash. I am fluent in most so...

#1664 Coder's Corner » Compression System » 2012-10-16 09:49:27

ShivamS
Replies: 4

Hello everyone. Anyone here familiar with the rusty language BASIC? Well, from that, I discovered a language called JustBasic (often abbreviated as JB). It's only 3 MB so... Anyways, I managed to code a very good compression system which compresses large strings in 3.4 seconds! I don't know if you guys are interested in testing it....

#1665 Re: Puzzles and Games » Can you suggest six names of great mathematicians quickly? » 2012-10-16 09:44:31

Supposedly, but Leibniz seems to have a head start on Integral Calc before Newton.

#1666 Re: Dark Discussions at Cafe Infinity » Aliens? » 2012-10-16 09:43:20

The old person could be a Genius (with a capital) and have a higher intellect then Mozart. Then he could have properly used that gifted knowledge to communicate with ET.

#1667 Re: Guestbook » Can science and religion coexist peacefully? » 2012-10-16 09:41:36

Infinity, even if you said that, I would agree with you. As of now, our world is leading towards annihilation. The Iron Age, as the Greek's imply.

#1668 Re: Introductions » Hi » 2012-10-16 09:39:47

Hello; Welcome to the forum!
The jokes used to be fun, but no one posts anymore. Anyways, use the hyperlink tags when posting links.

#1669 Re: This is Cool » Pascal's square » 2012-10-16 09:38:08

No one there at Yale likes me. I am the handicapped kid using a walker sitting in the corner reading about stem cell research. Literally.

#1671 Re: Maths Teaching Resources » Basic Algebra for Form1 students in secondary schl » 2012-10-16 09:23:53

I was taught adding variables in grade 4 and it seemed fairly easy. I was told that as long as the literal coefficients are the same, I can simply add and/or multiply the numerical coefficients depending on the operator.

#1672 Re: Jai Ganesh's Puzzles » Oral puzzles » 2012-10-16 09:18:34

Haha. I like posting every 15 questions.

#1673 Re: Help Me ! » Calculus Distraught Part 2 » 2012-10-16 09:17:18

Oh, my apologies. dy/dx = 2x + a so...

#1674 Re: Help Me ! » Calculus Distraught Part 2 » 2012-10-15 12:26:50

Eureka again. More discoveries then Archimedes.

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