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Math Geeks, Halp! (pg. 2)
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| Meat187 |
No, it wasn't.
Correct is: an = 3*2n*n!
The problem was that (-1)! is not defined. |
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| Pokit |
| quote: | Originally posted by Meat187
No, it wasn't.
Correct is: an = 3*2n*n!
The problem was that (-1)! is not defined. |
oh ok. I guess if you mutate mine a little bit it was right all along.
and how the hell do you add superscript.. |
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| Meat187 |
| quote: | Originally posted by Pokit
and how the hell do you add superscript.. |
If you can quote superscript you can write superscript. :)
Just look at the tags used there. |
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| Pokit |
| quote: | Originally posted by Meat187
If you can quote superscript you can write superscrip. :) |
yeah i just noticed. lol.
What was just messing with my mind is that my equation can be turned into your equation with a few operations:
6n*(n-1)!*2n-1 = 6 * (n*(n-1)!) * 2n/2 = 3*n!*2n
But my equation won't work with n=0 where yours does.
Im just dumb when it comes to math lol |
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| IpLaYWiTLiGhTs |
Finally, you guys are ing geniuses. What math background do you guys have? I know this is fairly easy stuff, probably equivalent to alg 2, but this one in particular was really mind-ing me.
And since you helped me, subscript is "sub" with HTML tags, or "sup" for superscript.
Thanks fellas. |
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| Trancealot |
decent thread. I finished my mech. eng degree recently so I have seen my fair share of math.
Question for the math geeks out there. I saw this my on a final I took and have never worked on this before? "3/2!" a factorial of a fraction. I did my research after the exam and it has to do with the gamma function, etc and know what it equals?
http://en.wikipedia.org/wiki/Factorial <--non integer values
My main concern is what class would you learn this in even though we did the typical factorial in HS? |
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| Comrade Stalin |
| f(x) = mx + b |
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| Trancealot |
| quote: | Originally posted by Comrade Stalin
f(x) = mx + b |
Why did the chicken cross the Möbius strip?
To get to the same side
:p ....:nervous:
"http://www.tfproject.org/tfp/tilted-humor/163-math-jokes-warning-super-lame.html" |
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| Sykonee |
| I've a Calc II Final tomorrow morning. If I don't pass it, I fail the course. First time I've ever significantly struggled with mathematics. Damn you v dus and (n+1)s.:mad: |
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| Trancealot |
| quote: | Originally posted by Sykonee
I've a Calc II Final tomorrow morning. If I don't pass it, I fail the course. First time I've ever significantly struggled with mathematics. Damn you v dus and (n+1)s.:mad: |
I remember finding areas and volume of rings. Not the hardest but having a decent professor helps.
quick review below
http://tutorial.math.lamar.edu/Clas...cII/CalcII.aspx
good luck |
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| Sykonee |
| quote: | Originally posted by Trancealot
I remember finding areas and volume of rings. Not the hardest but having a decent professor helps. |
I've done fine with the homework and stuff, it's the exams that keep tripping me up, and it doesn't help that they're worth such a significant portion of the final grade.
Nor does the fact I'm in a class with a bunch of summer Asian students, putting me significantly under the curve of a class for the first time since Grade 8 woodshop.:sadgreen: |
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| Pokit |
| quote: | Originally posted by IpLaYWiTLiGhTs
Finally, you guys are ing geniuses. What math background do you guys have? I know this is fairly easy stuff, probably equivalent to alg 2, but this one in particular was really mind-ing me.
And since you helped me, subscript is "sub" with HTML tags, or "sup" for superscript.
Thanks fellas. |
You're welcome
I actually don't have that much of a background in math. I've taken 3 calc courses and an Ordinary Differential Equations + Linear algebra course (Partial differential equations next semester...)
Anyway, my approach to solve the problem, ironically, had nothing to do with any kind of formal mathematical algorithm/formula. All I did was take a look at any patterns I could see. I saw that each level was divisible by 3n, and that each level was divisible by (n-1)!, so i pulled that out and saw that the sequence just followed 2n-1, so put all of it together and do a little bit of manipulation adn you get 3*n!*2n |
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