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Old 12-01-2014, 12:56 AM   #9861
damian_91
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Quote:
Originally Posted by guitarplaya322
How do you solve this differential equation using separation of variables?

dy/dx=(-2y+x^3)/x

you can't write that as dy/dx=f(y)/g(x)

y'+(2/x)*y = x^2

multiply both sides by exp(*integral* 2/x dx), then you're left with d/dx (y*x^2) = x^4
then y*x^2 = 1/5 x^5 + c
y= 1/5 x^3 +c/x^2
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Old 12-02-2014, 07:28 PM   #9862
Godsmack_IV
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what do the square brackets mean? just standard grouping i think

what does the dot mean in the right hand side of the third equation?

what is that triangle thing in the the fourth equation? explained in the text

first order logic apparently

taken from http://webdam.inria.fr/Jorge/files/wdm-ontologies.pdf
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Old 12-10-2014, 04:32 PM   #9863
Neo Evil11
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http://www.biostat.umn.edu/~brad/V9SingAlong.pdf
For those that like Bayesian statistics/econometrics and bad parodies.
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Old 12-19-2014, 06:51 PM   #9864
mind_meld
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To show that art and science can really come together in a purely aesthetic way:
http://www.histoservinc.com/photo/s...-1_edited-1.jpg

It's part of the gastrointestinal tract and I thought wow that looks amazing. Who will appreciate it. Hope someone out there has
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Old 12-20-2014, 08:10 AM   #9865
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OK so I understand the concept of a 'moment' in mathematics. But what exactly is an inverse moment? I have not yet found an answer despite my thorough search of the first page of google results.
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Old 01-04-2015, 09:22 PM   #9866
Bladez22
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guys quick question, I'm stuck on a very small part of Laplace transforms. Its not the Transform itself, its a small algebra thing in a part of the Transform

basically, why does (2/(s+4)) + 1 simplify to 2+(s+4) / (s+4)

is it because you have to make +1 into a fraction as well, and then make the denominators the same by multiplying in (s+4)?

i hate algebra sometimes
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Old 01-05-2015, 12:15 AM   #9867
damian_91
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Quote:
Originally Posted by Bladez22
guys quick question, I'm stuck on a very small part of Laplace transforms. Its not the Transform itself, its a small algebra thing in a part of the Transform

basically, why does (2/(s+4)) + 1 simplify to 2+(s+4) / (s+4)

is it because you have to make +1 into a fraction as well, and then make the denominators the same by multiplying in (s+4)?

i hate algebra sometimes

1=(s+4)/(s+4)

2/(s+4) +1 = (2+s+4)/(s+4)
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Old 01-15-2015, 06:04 PM   #9868
Neo Evil11
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I hate it when people in game theory write pay offs in a symmetric game only for 1 player.
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