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#3798 - thereasonableperso (01/07/2015) [-]
Need some help with algebra 2. I need to know how the fuck to do #14, "radical expression". My grade is falling because of this shit and google is no help.
#3800 to #3798 - kebabs (01/07/2015) [-]
This one was very basic OP, you better brush up your skills.
#3801 to #3800 - thereasonableperso (01/07/2015) [-]
I know it's basic. THAT'S WHAT WORRIES ME!
User avatar #3817 to #3801 - coronus (01/09/2015) [-]
Remember to change the radicals over to exponential form before you do anything else.

x =x^1/1
√x =x^1/2
3√x =x^1/3
4√x =x^1/4
5√x =x^1/5

and so on.

www.wolframalpha.com/ is a lifesaver for most math things, and usually gives good walkthroughs of all the steps involved.
User avatar #3794 - phoenixforger (01/07/2015) [-]
I'm not sure if this is the best spot, but there is no Math board. I just finished up Calculus III, and am taking my first engineering course. My professor told us that we would have an algebra quiz next class. Anyone know somewhere that I can brush up on concepts I may have forgotten?
User avatar #3796 to #3794 - kebabs (01/07/2015) [-]
khanacademy
pactrickjmt
I also had a pic of many formulae, someone posted made it on /sci/, it contains many concepts of calc I, II, and III and many formulae related to linear alg.
But sorry can't upload it due to fj's size limits.
#3791 - mythicalmenace (01/07/2015) [-]
Today I started research and development on weaponized body mounted pneumatic pistons that can be used to help people jump higher and punch harder
#3792 to #3791 - princessren (01/07/2015) [-]
but what are their applications to masturbation?
but what are their applications to masturbation?
User avatar #3842 to #3792 - MuffinMan (01/12/2015) [-]
Limitless, if you're brave enough
User avatar #3790 - mcderper (01/07/2015) [-]
**mcderper used "*roll 6, Pony*"**
**mcderper rolls Royal Riff**
**mcderper rolls Laurette**
**mcderper rolls Lemony Gem**
**mcderper rolls Slipstream**
**mcderper rolls Noteworthy**
**mcderper rolls Coral Shine**
User avatar #3789 - onefuckingskurut ONLINE (01/06/2015) [-]
I am considering studying electrical engineering. Anybody here ever studied this? Can you tell me something about it?
User avatar #3793 to #3789 - frikandelspeciaal (01/07/2015) [-]
I'm doing electrical engineering right now.

In my college there three directions you could go: electronics, elektrical and electro-mechanical engineering.
Each of these options had basic 2 programs you could follow: "profesional bachelor"(3 years) and "master"(4 years).

The profesional bachelor is a very practical educations which teaches you a lot of practical skills like drawing electrical schematics, programming PLC's, hooking up and controlling motors, ...

If you go for a master's degree, you'll start of with a lot more theoretical lessons. They'll be teaching you a lot of maths and physics.
Getting a master's degree is a lot harder than getting the backelor's degree but by the end you'll have a much deeper knowledge and understanding of the field you chose (as well as a higher paycheck).

I first did the professional backelor in electrical engineering in which i passes all years with relative ease. After that I decided I wanted to to keep studing to go for a master's degree.
My school allows this but before you can do this the school makes you do an extra year in which I get a lot of theoretical lessons to catch up. So this is an alternate path to a master's degree that takes 5 years to complete.

So this is basically how it works in Belgium, it might differ from country to country.

Please let me know if you have any more questions.
User avatar #3795 to #3793 - onefuckingskurut ONLINE (01/07/2015) [-]
I dunoo. I am graduating high school in March and I am studying safety at work. We were supposed to get the safety technician certificates after we graduated but its not happening...

So I really need to study something else and make it so I can get a job with it... I am thinking about these kind of majors because there is supposedly lots of maths in it. I have very good math thinking but my math knowledge is low...
Beside that I never really found anything I would like to do in life. I just know that math makes most sense out of all the classes I had so I want to work with math...

What discouraged me the most when I was reading about electrical engineering that it is interdisciplinary field with wide range of application or such... It would probably be a good thing but the same I heard about the major I study now (and right now my major is near useless becoz here are too many safety technicians in our country).
In fact I got to learn about many things in school. I learned about basic engineering, metallurgy, technologies, ergonomy, biology, mechanics, technical drawing, safety and work laws. Thing is I found it annoying and near impossible to keep all these classes in my mind.

What do you think about "Multimedia Telecommunications". Its a master's degree major and I would like to get the master's degree if possible. However maybe I won't be able to coz financial problems and I am just gonna have to get a job with what I know...
User avatar #3797 to #3795 - frikandelspeciaal (01/07/2015) [-]
Well, the fact that electrical engineering has such a wide range means that you will never be able to know absolutely everything about it.
By the end of your education(whatever you choose) you won't be able to say that you know everything about your field.

However it gives you a good base knowledge and teaches you to think logically.
For example: My boss when i was working as an intern is over 60 years old, he has like 45 years of experience in electricity.
One day we were talking about a certain electrical circuit and he asked me "What's the voltage that you would get here?".
I answered: "I know that there is a formula to calculate that but i don't know it out of my head".
He said: "Well i don't know the formula either but I can still figure it out".
He grabbed a piece of paper, drew the schematic , applied a few basic laws of electricity and within 2 minutes, he had found the formula that i didn't know just by thinking logically.

So what i'm trying to say here is that with a good basic knowledge and by logical (or mathmatical) thinking you should be able to manage yourself.


When you choose a field it should be something that you find interesting.
Try looking around on the websites of colleges and see what courses they have to offer. You'll probably find what subjects they teach you as well as what kind of work you could do that that diploma.
User avatar #3799 to #3797 - onefuckingskurut ONLINE (01/07/2015) [-]
Can I ask what how good of a student were you when you were applying for electrical engineering? : )
User avatar #3809 to #3799 - frikandelspeciaal (01/08/2015) [-]
Throughout highschool I was a pretty bad student, I only did the bare minimum of work required to pass. I usually passed with like 50-60%. I never really bothered understanding the material.
This might also be because many of my teachers sucked, in math they just said: "This is what's asked, follow these steps to get the answer and just write that down".

During the first couple of weeks of college they went over a lot of things i saw in highschool and they did a much better job explaining it.

Doing homework got a lot more fun for me in college because in highschool it felt like doing work, i was just following a checklist of things to do, i'd half-ass it and then turn it. It's just seemed like a useless task to keep us busy

In college I actually learned stuff from doing homework, it forced me to think about the material and i got a sence of accomplishment from gaining a deeper knowledge of the subject.
User avatar #3868 to #3809 - alltimetens (01/13/2015) [-]
Holy shit... I'm in high school right now and that's how I'm feeling.


None of the material that we're being forced to learn bears any use in life. I'm trying to go into medicine/nursing, but obviously solving quadratic equations and learning about Shakespeare's Iambic Pentameter are much more important.
User avatar #3810 to #3809 - onefuckingskurut ONLINE (01/08/2015) [-]
Thanks, you was wery helpful! : )
#3786 - Elk (01/06/2015) [-]
**Elk used "*Roll picture*"**
**Elk rolled image** Can someone explain Frankenstein's Theory of Realtitties to me?
#3788 to #3786 - kebabs (01/06/2015) [-]
"thermodynamickey gives us right to be real harsh on titties"-Wolfentungsten
User avatar #3778 - nimba (01/05/2015) [-]
www.todayifoundout.com/index.php/2010/07/humans-have-a-lot-more-than-five-senses/

In case you haven't heard of some of the other senses.
User avatar #3867 to #3778 - alltimetens (01/13/2015) [-]
I worked as a police officer for some time and we were learning about how you could test if a person is intoxicated or not but using the proprioception sense. I was always wondering how intoxication impaired your ability to distinguish the location of certain body parts in relation to others.
#3777 - syntheticwatermelo (01/05/2015) [-]
Hey guys what is i to the power of a googol.
User avatar #3784 to #3777 - kebabs (01/05/2015) [-]
-0.876347107+0.481680131i apparently, googled i^(10^100)
User avatar #3779 to #3777 - subtard (01/05/2015) [-]
1
User avatar #3783 to #3779 - Googol (01/05/2015) [-]
-1, actually

The mathematical constant i, defined as the square root of negative 1, squared, would simple negate the square root. To an odd power, however, and we're back to i. Considering a googol is an even number (10^100), we would end up with -1.
#3785 to #3783 - quatre (01/05/2015) [-]
nope, subtard is right. the mathematical i raised to a power will come out to +1 every other even number; that is, when the exponent is divisible by both 2 and 4.
i^1= +i
i^2= -1
i^3= -i
i^4= +1
i^5= +i and the pattern repeats.

User avatar #3847 to #3775 - alltimetens (01/12/2015) [-]
This really makes me want to live 250+ million years in the universe now because I would love to see the world become an entire continent.
0
#3773 - mrpeep has deleted their comment [-]
#3744 - logickid (01/02/2015) [-]
So, if I went back in time to change something and I get stuck in a loop because of me >disappearing after changing the thing I changed thus not ever going back in time to change it... could I prevent the loop by killing myself? This is just a random question that CAN'T be proven, but...
User avatar #3765 to #3744 - whatley (01/02/2015) [-]
That's not how time works.
User avatar #3741 - creepydudewatching (01/02/2015) [-]
Okay, so I have a new theory about how the human race will die out. I've never heard of it before but it came to me in a dream and it's pretty freakin' mad. Here goes.

In the future technology will be smarter, faster, cheaper, and more readily available. Everybody will own something technological and one day someone will create a system whereby you can scan your family tree and see how you're related to each and every single individual person. One day people will start declining sexual partners due to the fact that their lineages can be traced, and those that cannot be traced will have offspring that can be.
People will be so afraid of inbreeding that they just won't breed, and it may result in the human race dwindling, but if that happens then the inbreeding will get worse and people will be more repelled by this until the only humans left breeding are the ones who don't care, or are "old-fashioned".
I understand that this is probably not true, but I wanted to share it.
User avatar #3850 to #3741 - alltimetens (01/12/2015) [-]
Meh...

people knowingly marry their cousins in more conservative countries at this very moment. Scientists already stated that all humans are at most, 50th or so cousins.
I highly doubt people would stop breeding.
#3780 to #3741 - omnomer (01/05/2015) [-]
I really think genetic engineering will catch up before this situation would play out. Like, rewriting DNA or just making babies in labs, not to mention some super once-a-year contraceptives that can be taken before doing the nasty with your close-but-not-too-close relative.

I don't see how less humans on this planet could possibly be a bad thing unless we started shipping citizens out to our interstellar colonies by the galactic cruiser load.

Have you seen Idiocracy? Cause it kinda plays off the idea that stupid people/in-breeders outpopulate everyone else. Or something like that. Watch it, it's great.
User avatar #3781 to #3780 - creepydudewatching (01/05/2015) [-]
I freaking loved that movie. People watering the crops with gatorade and stuff; hilarious stuff
#3782 to #3781 - omnomer (01/05/2015) [-]
It's got what plants crave!
User avatar #3776 to #3741 - nimba (01/04/2015) [-]
It's already a problem in Iceland, there's an app that checks you and your partner's genetic lineage for possible inbred diseases in the children. It's not really likely I think though to be applied to the world
#3771 to #3741 - anonymous (01/02/2015) [-]
The more accurate thing is that humans will become fragile and stupid due to their reliance on technology.
User avatar #3760 to #3741 - kebabs (01/02/2015) [-]
Very interesting read. Highly unlikely, but damn you got yourself a good imagination.
User avatar #3745 to #3741 - leightonsolomon (01/02/2015) [-]
It's interesting, but an extremely unlikely scenario. Even if that did happen there will always be someone left. And I seriously doubt people are going to decline booty because theyre 48th cousins with someone.
User avatar #3742 to #3741 - iridium (01/02/2015) [-]
That's not a theory. That's silly conjecture.
#3740 - anonymous (01/01/2015) [-]
Sam Harris really irks me.

"All your actions were written during the Big Bang."
"You do not exist; the self is an illusion."
"But morality is still objective."

I'm sorry- what? Did I miss something?
User avatar #3761 to #3740 - kebabs (01/02/2015) [-]
You missed the part where you aren't supposed to pay attention to these philosophical bullshit.
User avatar #3774 to #3761 - mrpeep (01/03/2015) [-]
I probably shouldn't. Should determinism be true, whether something is "immoral" is highly irrelevant.
User avatar #3746 to #3740 - leightonsolomon (01/02/2015) [-]
Well he's right. Are you confused?
#3747 to #3746 - anonymous (01/02/2015) [-]
Elaborate. How can one's actions be objectively right or wrong if this is merely a cosmic puppet sow? The assertion baffles me.
User avatar #3749 to #3747 - leightonsolomon (01/02/2015) [-]
Thats what he is saying. The universe has no morality, we just make our own. Its objective. The only reason we see certain things as right or wrong is because of millions of years of evolution crafted us into social beings, with morality being beneficial for a social species such as ourselves.
#3750 to #3749 - anonymous (01/02/2015) [-]
"we just make our own."

Don't follow -- it's collective subjectivity. Redefining subjectivity does not get you objective morality.
User avatar #3751 to #3750 - leightonsolomon (01/02/2015) [-]
Poor phrasing on my part. We dont make morality, its embedded in our brains. The point being that we have morality and it is important to us, but the universe is indifferent.
#3753 to #3751 - anonymous (01/02/2015) [-]
>We don't make morality, it's embedded in our brains.
We have yet to fully understand the mind; but you have peeked my interest. May I see a study?

What is happening is based on the laws of physics and the arrangement of matter in the universe. This assertion falls under the naturalist fallacy. Yes, we have a tendency to create moral codes; but it is not objective -- which is why morality varies from society to society.
User avatar #3755 to #3753 - leightonsolomon (01/02/2015) [-]
This is true there is much we do not know, but from the little we do know, it makes sense to assume morality like all other behaviors were beneficial to our species and were therefore hard wired in. It varies this true because you will always have the nature vs nurture argument, but the fundamentals stay the same. Dont murder, steal, be kind, etc.
journal.frontiersin.org/Journal/10.3389/fnint.2013.00065/full
#3756 to #3755 - anonymous (01/02/2015) [-]
Thank you for linking the article. I'll be sure to give it a more thorough read later.

If there are objective values by virtue of the fact that pain is intrinsically undesirable insofar as it is the motivational mechanism to avoid desire deprivation at a meta level, does that not mean the anti-natalist position is objectively correct and justified?
User avatar #3757 to #3756 - leightonsolomon (01/02/2015) [-]
My vocabulary is clearly less diverse than yours so im not 100% sure what you're saying, but I don't think the antinatalist position is ever valid without extreme overpopulation or famine.
#3758 to #3757 - anonymous (01/02/2015) [-]
Ah, but in such situations it would be common sense.

Thank you for the discussion. While I'm not entirely sold on objective morality, I now understand Harris' position somewhat better.
User avatar #3759 to #3758 - leightonsolomon (01/02/2015) [-]
True. Same to you.
#3754 to #3753 - anonymous (01/02/2015) [-]
piqued*

Excuse me. It's late here
#3748 to #3747 - anonymous (01/02/2015) [-]
show*
User avatar #3739 - lulzformalaysiaair (01/01/2015) [-]
the concept of heat death is very interesting.
User avatar #3767 to #3739 - whatley (01/02/2015) [-]
Unlikely however.
User avatar #3762 to #3739 - marinepenguin (01/02/2015) [-]
When I first heard about it, I wanted it to not be true because it seems so depressing to me.
User avatar #3763 to #3762 - lulzformalaysiaair (01/02/2015) [-]
ehh not to me. The thing about me is I like to live narcissist-ically , everything is about me. Not the universe, I got goals, my mind is busy. No time to be depressed by greater cause bullshit.
User avatar #3764 to #3763 - marinepenguin (01/02/2015) [-]
I mean, I'm cool with it now. It's not like I'll ever actually experience it. But when I first read of it, I had my hopes set on the Big Rip theory. That way the universe was like a reoccurring thing. Big bang, expansion, big rip, deflation, repeat.
User avatar #3766 to #3764 - whatley (01/02/2015) [-]
If it makes a difference, heat death doesn't really look likely right now.
User avatar #3768 to #3766 - marinepenguin (01/02/2015) [-]
What's the prevailing theory then? I had always read that the heat death was more probable then the big rip.
User avatar #3769 to #3768 - whatley (01/02/2015) [-]
I'm not entirely sure to be honest, but Rip seems a lot better. Heat death doesn't seem likely for a few reasons. It'd be likely to happen in a universe that stopped expanding, but the rate of expansion for the universe it's actually increasing, not decreasing, and this should just keep going since gravity trying to pull the universe back together is weakening. It also only seems likely in finite universe, which doesn't seem to be the case. And finally, the universe was once in a state of heat death effectively a long time ago, where all energy was spread evenly, but it didn't exactly last long. We're not exactly sure why it didn't last long, but it didn't, the same thing is likely to happen if heat death ever occurs again.

The Big Rip has in favour of it the whole expanding universe thing, it was discredited when we thought that the universe would slow it's acceleration. All we need to do is experimentally find a value of omega, the ratio between the dark energy pressure and its energy density, and we can figure out if, and if so, when, the Big Rip will occur.
User avatar #3772 to #3769 - marinepenguin (01/02/2015) [-]
That's what I had always thought. The only issue with that is that if it were only gravity holding the universe together it would have happened a long time ago. Gravity isn't that strong. That's when dark matter and dark energy comes into play. Once we are able to figure out that stuff, we'll have a lot better chance at having a more accurate answer.
User avatar #3737 - xsnowshark (01/01/2015) [-]
Found something pretty cool on Reddit:

i.imgur.com/0PhU4Qd.jpg
User avatar #3770 to #3737 - whatley (01/02/2015) [-]
This definitely isn't right though, VY Canis Majoris has a radius of about 2bn kilometres, our Solar system has a radius of about 4.5bn kilometres depending on your definition of Solar System, but it's certainly not significantly more than that . This picture is showing something extremely exaggerated. Another comparison being that, VY Canis Majoris has a radius of about 1420x that of the Sun, big, but not the kind of big that final picture is depicting.
User avatar #3731 - lotengo ONLINE (01/01/2015) [-]
Im in my first year of my chemistry education.
I have to do a 15-20 minutes presentation about a science related object with two biomedical students and one biobased tech student. I was under the impression i had another 2 weeks but its monday. And because the other 3 are complete tools i have to come up with a subject and make the entire presentation on my own


Anybody has any ideas?
Or can somebody give me a link to the post with science in 2014 summed up, so i can pick a subject?
User avatar #3849 to #3731 - alltimetens (01/12/2015) [-]
Hope you did well lmao
User avatar #3732 to #3731 - nimba (01/01/2015) [-]
Synthetic biology - creation of novel organisms from a registry of standardised parts to solve environmental and industrial problems. Check out the igem competition: a challenge to invent a microorganism that solves a problem in a unique way. I saw one where a team used their biobrick to reverse eutrophication in a lake which was pretty neat.
User avatar #3733 to #3732 - lotengo ONLINE (01/01/2015) [-]
that has potential.

I'll have to dumb it down for the other 3 tho. I hate to do all the work on my own but one of those is a 6.4/10 girl, and i have about 1,2% chance of hitting that.

I like those odds
User avatar #3735 to #3733 - nimba (01/01/2015) [-]
I've done presentations on the subject before and I usually resorted to describing it as 'genetic engineering from scratch'. If you decide to do it feel free to drop me a question or two
User avatar #3736 to #3735 - lotengo ONLINE (01/01/2015) [-]
i already got a headace.

Its 19:20 over here, im gonna try to fall asleep soon, i need little sleep so i should be able to get out of bed at 4 am and work out an entire presentation.

I'l look into your thing, thnx
User avatar #3726 - lolgonewrong (01/01/2015) [-]
Do we have the technology to kill people with our mind yet?
User avatar #3727 to #3726 - iridium (01/01/2015) [-]
We have the biotechnology created through evolution and inputted into our minds to conceive of a device that can kill another man which we use in order to fulfill that purpose.

I don't think so in the way you're thinking of, like telekinesis, but we have invented devices that react to stuff in our head, so it's theoretically possible to design a weapon that requires no trigger but still fires.
#3725 - bwiedieter (01/01/2015) [-]
Solar Probe Plus, the new mission into the corona of Sol:
We Are Sending a Probe into the Sun
User avatar #3723 - luigipimp (12/31/2014) [-]
where does the water go from the droughts people are having? wouldnt it just come back as rain? could all the water be coming back as rain into the warm parts of the ocean and with all that extra water be raising the water level and pushing the warm water north making the artic ice melt?
User avatar #3734 to #3723 - nimba (01/01/2015) [-]
Evaporation is a factor but so is low rainfall in the first place. As for the water moving I have a feeling that ocean currents are more complex than that, though I don't know.
User avatar #3752 to #3734 - luigipimp (01/02/2015) [-]
but wouldnt the evaporated water go somewhere where it rained a lot? and i figured with the water currents, like if you kept adding warm water to a cold pool.
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