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#301 Re: Help Me ! » Graph Question » 2013-05-13 15:42:56

2.) if the graph cannot be drawn without lines crossing each other, then you need another layer probably to get the 3-d effect, like knot theory sort of.

#302 Re: Help Me ! » Dots and Lines » 2013-05-13 15:39:44

since a line segment or "edge" has two ends, then yes, 1/2 is the formula.  v=dots  d=ends of lines on a dot.   e=#ofline segs
Pretty obvious really if you draw a few.  but to prove it, ask Ricky.

#303 Re: Help Me ! » Multivariable Calculus Help » 2013-05-13 15:32:46

I searched for Jane's formula but couldn't find it.
but i did find this weird discussion of mine and carlos.
http://www.mathisfunforum.com/viewtopic.php?id=2168

#304 Re: Help Me ! » Multivariable Calculus Help » 2013-05-13 15:18:52

there is a formula for the length of a curve that might help.  jane fairfax gave it to me on this forum a few years ago.
search for length of curve or something...   then put that together with the height witha product i guess and maybe it'll work.

#305 Re: Help Me ! » solving algorithm problem » 2013-05-13 15:15:51

the half thing seems right because log(400) is about 2.6 and 2.6/2=1.3 and log (20) sorta is 1.301, so that's good...

#306 Re: Help Me ! » Logic gates » 2013-03-21 02:18:58

If you wire the output of a logic gate to an input upstream from a bunch of logic gates, you create a sequential sort of circuit, depending what exactly you do.
I suggest reading about J-K flip-flops and D flip-flops and also thinking about
how these flip-flops are made out of logic gates and pursuing some thought
about making a sequential machine without using J-K or D flip-flops, but
simply by figuring out your own way of creating a sequential circuit.
I do not know how to make a mathematical expression for a sequential circuit.

#307 Re: Help Me ! » Derive and Equation Part 2...Help Appreciated! » 2013-03-12 02:31:43

For convenience, here is the image.
Click to enlarge.

#309 Re: Help Me ! » !!!!help Me Please - Word Problem Chemistry Related!!!! » 2013-02-20 14:15:59

(49/50)(500ml)(3) should work.  The reason is that if 49 parts water out of 50 make 98% water, then that's 2% salt by weight.
so therefore you want to quadruple the water to go from 2 to 1 to 1/2 of a percent salt.  So add 3 more times the 49 parts.
Am i right?

#310 Re: Help Me ! » Boolean rule #11 » 2013-01-25 15:35:57

Venn diagrams are circular usually and Karnaugh maps are gridlike square-ish, but they are both one and the same except that the
Karnaugh map encloses the zero zero zero case in a box, whereas a venn diagram puts the zero zer zero case outside all the circles and does not
put a circle around it, though you could circle everything and that would make them more similar.

#311 Re: Help Me ! » evaluate the expressions using the graph » 2013-01-25 15:29:11

w h(w) j(w)
2   4       1
3   9       1.5
4   16       2
9   81       4.5
16 256     8
j(w) means takeHalfOf(w)
h(w) means square(w)
So j(h(2) = 2 because h(2) = 4 because 2 to the 2 power is 4 and j(4) is half of 4 or 2 back for the answer.

So j(j(j(j(32)=2 because j(32) = 32/2 = 16 and j(16) = 16/2 = 8, and j(8) = 8/2 or 4. and j(4) is 2.

#312 Re: This is Cool » A Nice Clock » 2013-01-25 15:15:53

log base e of 55 is too big for 4, should be 54.5981500331

as

2.718281828459045235 ^ 4 is 54.5981500331

#313 Re: Help Me ! » boolean rule » 2013-01-25 15:09:02

1 = 1 | 0
0 = 0 | 0
| means OR.
now AND...
0 = 0 & X
X = 1 & X, where X can be 1 or 0 (boolean value)
now XOR...
(exclusive-OR)
1 = 1 ^ 0
1 = 0 ^ 1
0 = 1 ^ 1
0 = 0 ^ 0
basically the 1 is a toggle of the other value, toggle = flip from 0 to 1 or 1 to 0.
Given that Ab, Bb, Cb are boolean variables holding 0 or 1, we have the following:
The / sign is the negation or NOT symbol as / put in front of a variable.

(Ab & /Bb) | (Bb & /Ab) = A ^ B, where ^ means exclusive-or (XOR).

Also demorgans laws something like...
/(Ab & Bb) = /Ab + /Bb

Also see Karnaugh mapping for electronics ways...

Maurice Karnaugh of Bell Labs 1957 1953...

#314 Re: Help Me ! » Probability problem » 2012-12-28 13:41:11

I think you are correct and the problem meant to say what is the probabil that the man has one (not none) of these accessori, in which case 3/4 would be he is wearing one of the things.  Your iteration of the permutations seems correct.  I would stick to your guns. Good Luck.

#315 Re: Puzzles and Games » Let's make triangular numbers. » 2012-12-27 05:14:02

4005 (skipped) and 4095
4005 + post90 = 4095
90 x 91 / 2 = 4095

#316 Re: Puzzles and Games » Let's make triangular numbers. » 2012-12-27 03:09:54

3916
3828 + post88 = 3916
post88 x 89 / 2 = 3916

#317 Re: This is Cool » Pacman using GeoGebra??!! » 2012-12-27 03:01:51

dot org, rite?  do u have to download the software to do this?

#318 Re: Puzzles and Games » Identify what this is. » 2012-12-27 02:56:04

I'm sorry for any  confusion, I just couldn't resist a little joke with the seasons greetings and so forth.
Actually, the seasons have little or nothing to do with the puzzle.  I regret any wasted time this hath causeth.
#84 = Po, as in the november poisoning of the russian run-away with polonium-210 in 2006.

#319 Re: Puzzles and Games » Identify what this is. » 2012-12-25 08:07:31

Okay, her4e's another try on the circular seasons number chart...

#320 Re: Puzzles and Games » Identify what this is. » 2012-12-25 07:59:32

I guess 122K bytes photos are too large for our forum.  I thought max was 64K at one point, but thought it was larger now.

#321 Re: Puzzles and Games » Identify what this is. » 2012-12-25 07:57:37

This pic shows
that the order
of the numbers
belongs to the
seasons.
Happy seasons!!!!

#322 Re: Puzzles and Games » Identify what this is. » 2012-12-20 18:33:28

This clue should give it away.
Try reading on a guy named, "Charles Janet".

#323 Re: Puzzles and Games » Identify what this is. » 2012-12-20 09:03:43

Another clue:  In 1929, these numbers were known such that this order could have been generated by a guy last name "Janet", though he did not put them in this particular order, but he had the knowledge to do it, based on what he did generate in 1929.

#324 Re: Help Me ! » alphebetica order » 2012-12-17 06:42:41

Aei => 333
Spcl => 24 Ways, So Make It 4444

Start List To Get Idea

posted at 18:43 UTC: (continued)

4444333
4443334
4433344
4333444
3334444

3344443
3344434
3344344
3343444

4334443
4334434
4334344

4433443
4433434

4443343

now do single 3 first then double 3 later...

3444433
3444334
3443344
3433444

4344433
4344334
4343344

4434433
4434334

4443433

now do all 3's apart and separated...

3444343
3443443
3434443

3443434
3434434

3434344

continue with 3 in second place...

4344343
4343443
4343434

now do 3 in third place.

4434343

that's it i think.
hope i didn't miss any.
count them all up and multiply by 24 for the answer to the question because the consonants can be arranged 24 ways = 4 x 3 x 2 x 1.

#325 Re: Help Me ! » Prove √5 is irrational... » 2012-12-17 06:05:18

only thought that comes to mind is that route 5 minus 1 over 2 is golden ratio, and route 5 plus 1 over 2 is the other golden ratio.

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