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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#202 Re: Help Me ! » LaTeX - A Crash Course » 2007-04-05 11:47:01

I don't have any idea tho , when I first saw the thread I had no idea it's talking about how to type math , so I am not sure ppl can understand.

#204 Re: Introductions » About Me » 2007-04-05 11:41:43

JaneFairfax is a Mathematcian!!!! WOW, No wonder you can answer every single question of our posts! Kool!

#205 Re: Help Me ! » LaTeX - A Crash Course » 2007-04-05 11:32:37

I think the title should be changed a little bit , Cuz , ppl dont understand when they first see it.

#207 Re: Exercises » Exercises » 2007-04-05 02:37:28

Induction is one method, you can also use

#209 Re: Help Me ! » explain » 2007-04-04 12:18:00

Does that mean , the residues? integers modulo 6? shoundnt it belike this  a congruent to b modulo m ?

#214 Exercises » Exercises » 2007-04-04 11:35:26

Stanley_Marsh
Replies: 14

(I tried to make it complicated, but then I realized it would be very hard : What I first made is
)

#217 Help Me ! » explain » 2007-04-04 10:37:19

Stanley_Marsh
Replies: 4

What is " In

, the group of integer modulo 6 "?

#218 Re: Help Me ! » Periodic function » 2007-04-04 02:09:20

JaneFairfax wrote:

Yes, it is! neutral


sin{mx}+cos(nx) has period 2π⁄d, where d = gcd(m,n). How many times must I say that? roll

How to prove this theorem?

#219 Re: Help Me ! » 3 discrete math problems: 1. countable sets, 2. probability, 3. pascal » 2007-04-03 21:56:41

The Function should be

  Thus you can generate all the elements of B .

#222 Re: Help Me ! » 3 discrete math problems: 1. countable sets, 2. probability, 3. pascal » 2007-04-03 17:04:26

I think the probability is 1/2 , cuz , there are only two option either even or odd , and the number of odds is equal to that of even.

#223 Re: Help Me ! » Periodic function » 2007-04-03 10:57:18

Still fighting the 3rd one , don't think the 3rd is a periodic function

#224 Re: Help Me ! » modular arithmetic question! » 2007-04-03 05:41:45

shoudn't it be in the form of  a=b (mod c) ???

#225 Re: Help Me ! » percenntage question » 2007-04-03 02:33:54

If thinking backward is hard , then assume that number is x and you will get this

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