Hard Light Productions Forums
Off-Topic Discussion => General Discussion => Topic started by: Colonol Dekker on March 19, 2010, 03:24:49 am
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Hmmmmmmmmmm math is hard :D (http://www.newgrounds.com/portal/view/530334)
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That was funny. Left me grinning.
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Funny, but one problem....
That equation should have been rationalized first.
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Pretty damned amusing. :P
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Heh heh. Math sure can be hard.... :lol:
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can't say that really tickled me....
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I'm not allowed to post things that REALLY make me laugh my head off. We squaddies have what is called 'sick bastarditis'.
So you'll have to make do :p
Edit- Make do with this (http://m.youtube.com/watch?v=OchjFx3YgEE&)I mean.
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Dekker, I can't open any of the videos you posted since my Firefox doesn't recognize the "rtsp" the addresses start with.
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What a coincidence that this post popped just when I have been dealing with an integral that resulted in a special function. Erf(x) in this case, if anyone was interested. Didn't like the look of resulting mess (Erf with imaginary arguments) and decided to go straight to numerical integration. But as a general rule, integrals of weighted Gaussians don't turn out to be nice... [Mutter] Stupid exp(-x^2). [/Mutter]
No, I didn't find the clip amusing either.
I guess it goes down to differences between people, I know a bunch of people who cannot solve a linear equation on paper, but it really doesn't affect their lives either. Although, they might be really quick to answer such questions as "Considering a drink that costs 5€ in a bar, do I have money to buy a round for my buddies or not?" which is actually not that far from solving the equation itself...
It probably goes down to the fact that life rarely throws you an equation and asks you to solve it, but deals with above kind of questions. Maths itself is an abstract product of mind, and actually differs radically from equation solving, which unfortunately is an image one tends to get from schools before University. It is not uncommon that Physicists and Engineers are actually a lot better at solving equations (Calculus) than Mathematicians themselves, but it is the Mathematicians who first research the problem and check if it can be solved at all, and what methods can be used.
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Dekker, I can't open any of the videos you posted since my Firefox doesn't recognize the "rtsp" the addresses start with.
Just search for 'Leo and satan' ;)
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What a coincidence that this post popped just when I have been dealing with an integral that resulted in a special function. Erf(x) in this case, if anyone was interested. Didn't like the look of resulting mess (Erf with imaginary arguments) and decided to go straight to numerical integration. But as a general rule, integrals of weighted Gaussians don't turn out to be nice... [Mutter] Stupid exp(-x^2). [/Mutter]
That isn't that bad. Erf is a pretty common function. I needed to integrate sinc(x)e-x2 in a paper I was writing last month, but that cannot be expressed using any standard special functions, so I just left it as it was. :p
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Well, my case was actually sin(x)*exp(-x^2).
Small division by x makes things all the more interesting. The one with sinc(x) deceptively looks like chain rule, complex analysis tricks or substitution could lead it to another, perhaps easier form, but on the other hand my gut feeling is that it will only end in sorrow. The above results in erf with at least partially imaginary arguments. Or at least Mathematica thought so, I didn't bother to waddle through the pages of Handbook of Mathematical Formulas to check the result since I only wanted to compare the substituted integral values and wasn't particularly interested in the functional form itself. So I computed the values by numerical integration.
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Yeah, I tried some things with it but didn't get anywhere, and neither did Mathematica. It's easy to integrate it over the whole real line using complex variables, but I needed it over an interval. Although it was part of an algorithm and was ultimately supposed to be done numerically anyway.
sin(x)e-x2 can be done using Fourier transforms. It should be easier to work out than the sinc one.
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I lol'd
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Hey i thought the devil invented algebra, to piss off students for all eternity
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if algebra is pissing you off, you've got a long and sad academic career ahead of you.
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if algebra is pissing you off, you've got a long and sad academic career ahead of you.
Not at all
Just pick a university course with no algebra, and all is right with the world!!
Let the algebra heads enjoy their equations. Ill be in the student bar, equating which lady is better looking
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Algebra is just rearranging stuff.
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Algebra is just rearranging stuff.
Fair enough, ill just be reaarranging stuff at the bar, or her place.
either way. Did all my algebra during my school days. Never again.
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Algebra is just rearranging stuff.
No it isn't.
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actually, yeah it is. the trick is to put stuff into a form where that is easy.
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Algebra really is just rearranging stuff. Math is just just addition, subtraction, division and multiplication.
Satan is just misunderstood. Algebra made him that way.
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If only we could cut people who don't believe in advanced mathematics off from technology dependent on advanced mathematics.
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There are people who don't believe in advanced mathmatics? I know plenty of people who don't like/understand/use it, but to not believe in it?
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There seem to be people here insisting that algebra is a subset of "rearranging stuff."
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This (http://en.wikipedia.org/wiki/Abstract_algebra) is what mathematicians call algebra, and it has nothing to do with solving equations or rearranging stuff. :p There is also a type of object called an algebra, as in a singular noun, that is studied in this field.
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This (http://en.wikipedia.org/wiki/Abstract_algebra) is what mathematicians call algebra, and it has nothing to do with solving equations or rearranging stuff. :p There is also a type of object called an algebra, as in a singular noun, that is studied in this field.
I think my mom listed that as the only course she had to re-take in college for her mathematics degree. I don't think she was a fan. :p