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Comments(3543):
What do you think? Give us your opinion. Anonymous comments allowed.
#2890

ishallsmiteyou (09/10/2014) []
Anyone who doesn't know their periodic table is a bismuth technetium carbon hydrogen.
#2887

meebobear (09/09/2014) []
Find the domain . also the fuck is this shit around the "2x+1" in math?
i never liked math , never did good at math guess its my time to shine as my teacher gave this question to the class in the last 10 minutes with a prize of full mark for the whole class.
no one answered . so he made it a homework with a prize of 2 marks for who solved it.
Find the domain . the question ends somewhere when we find the domain which usually goes like " f =R : f =/= something" for example.
HelpMePls D:
i never liked math , never did good at math guess its my time to shine as my teacher gave this question to the class in the last 10 minutes with a prize of full mark for the whole class.
no one answered . so he made it a homework with a prize of 2 marks for who solved it.
Find the domain . the question ends somewhere when we find the domain which usually goes like " f =R : f =/= something" for example.
HelpMePls D:
#2888 to #2887

frikandelspeciaal (09/09/2014) []
Y=F(x) means that the value Y is a function of value X
This means that the value of Y will vary depending on what the value of X is. The formula you've given shows the relationship between X and Y
This relationship will often be displayed using a graph (pic related).
When people ask for the domain of a function they are basically asking : "Is there a Yvalue for every possible Xvalue?"
When the answer is "yes" the domain is R, meaning that for every possible xvalue there is a Yvalue.
However, in your example the anwers is "no".
Whenever there is a X in the denominator of a fraction it will be possible that there is a Xvalue that will cause the denominator to add up to zero.
As you might know, dividing something by zero is impossible, meaning that the funtion Y won't exist for the Xvalue that causes the denominator to be equal to zero.
To be continued...
This means that the value of Y will vary depending on what the value of X is. The formula you've given shows the relationship between X and Y
This relationship will often be displayed using a graph (pic related).
When people ask for the domain of a function they are basically asking : "Is there a Yvalue for every possible Xvalue?"
When the answer is "yes" the domain is R, meaning that for every possible xvalue there is a Yvalue.
However, in your example the anwers is "no".
Whenever there is a X in the denominator of a fraction it will be possible that there is a Xvalue that will cause the denominator to add up to zero.
As you might know, dividing something by zero is impossible, meaning that the funtion Y won't exist for the Xvalue that causes the denominator to be equal to zero.
To be continued...
#2889 to #2888

frikandelspeciaal (09/09/2014) []
So to find the domain we have to ask ourself: "for what Xvalue will (2x+1)(5) equal 0?"
(2x+1)(5)=0
10x5=0
10x=5
x=5/10
x= 0,5
So if you fill in 0,5 into the formula you will find that the denominator will equal 0, meaning that F(X) does not exist for X= 0,5
So the domain is:
X=R: X=/= 0,5
I hope this explanation makes sense, if you have any more questions i will do my best to help you
So to find the domain we have to ask ourself: "for what Xvalue will (2x+1)(5) equal 0?"
(2x+1)(5)=0
10x5=0
10x=5
x=5/10
x= 0,5
So if you fill in 0,5 into the formula you will find that the denominator will equal 0, meaning that F(X) does not exist for X= 0,5
So the domain is:
X=R: X=/= 0,5
I hope this explanation makes sense, if you have any more questions i will do my best to help you
#2892 to #2889

meebobear (09/10/2014) []
the answer seemed so logical tbh.. showed it to my teacher at the end of the class . he said it was wrong and i was like "oh okay . went back to my seat" .. didnt even ask him why ._.
ill make sure to get the right answer tomorrow
thanks for your reply tho. really appreciated.
ill make sure to get the right answer tomorrow
thanks for your reply tho. really appreciated.
#2893 to #2892

frikandelspeciaal (09/10/2014) []
Is that the way your teacher gave you the formula? Because i might have interpreted it wrong.
Does the denominator say: (2x+1) times 5
Or does it say: (2x+1) minus 5
i'm not sure why he put so many brackets there
Also, did he tell you what the right answer way? I'm really curious as to why i fucked up
Does the denominator say: (2x+1) times 5
Or does it say: (2x+1) minus 5
i'm not sure why he put so many brackets there
Also, did he tell you what the right answer way? I'm really curious as to why i fucked up
#2894 to #2893

meebobear (09/10/2014) []
he did it exactly as the first one . we asked him the fuck's the brackets. he just looked at us and said the prize of the question :/
also he didn't say a thing about the right answer. so i suppose he'll still give marks for the right question :3 ill ask him the first thing tomorrow.
also he didn't say a thing about the right answer. so i suppose he'll still give marks for the right question :3 ill ask him the first thing tomorrow.
#2900 to #2896

frikandelspeciaal (09/11/2014) []
There are several cases in which a function cannot exist for a certain Xvalue.
The first one i mentioned is when the denominator of a function becomes 0.
Another situation is the square root of a negative number.
When a square root is involved, you will know the function will exist as long as the contents of that square root is greater or equal to zero.
So in your example the domain goes from 5/3 to infinity, because as long as X is greater than 5/3 the funtion will exist.
The first one i mentioned is when the denominator of a function becomes 0.
Another situation is the square root of a negative number.
When a square root is involved, you will know the function will exist as long as the contents of that square root is greater or equal to zero.
So in your example the domain goes from 5/3 to infinity, because as long as X is greater than 5/3 the funtion will exist.
#2881

imtryingmybest (09/08/2014) []
was polio cured or was it weak enough for the vaccine to stop it? shouldnt we atleast be close to the cure for the flu and common cold by now? in reality do pharmicuticals want to make cures for atleast the bigger things or make money off treatments? does scaraway really work? do the cosmetics with plant stem cell work? why am i asking all these questions?
#2885 to #2884

blaaz (09/08/2014) []
Well for those i personally think that i don't know enough about the subjects to give a accurate response to them. I apologize for that.
I do happen to know a little bit about the "cold/Flu" one though (anyone feel free to correct me if im wrong)" From what i understand about the cold/flu is that they often mutate in a sense that they swap genetic information between other versions of the "cold/flu" which would mean that each mutated version is technically a completely different disease yet still function in a similar matter.
( cures for diseases to my knowledge work like keys do to locks. If the "teeth" inside the lock are changed then the key/cure wont work for that modified lock)
I do happen to know a little bit about the "cold/Flu" one though (anyone feel free to correct me if im wrong)" From what i understand about the cold/flu is that they often mutate in a sense that they swap genetic information between other versions of the "cold/flu" which would mean that each mutated version is technically a completely different disease yet still function in a similar matter.
( cures for diseases to my knowledge work like keys do to locks. If the "teeth" inside the lock are changed then the key/cure wont work for that modified lock)
#2874

cognosceteipsum (09/05/2014) []
I have a theory. The high pitch whine that some mammals make when they're afraid (not threatened, read, afraid) is made to comfort them
#2869

Marker ONLINE (09/05/2014) []
anyone know of a good site to graph vectors by inputting magnitude and angle?
#2866

assdoreponyfucker (09/03/2014) []
sciencexplain ! What's so significant about a mole? (chemistry)
#2865

youdontknoeme (09/03/2014) []
What are the steps to developing a scientific theory? What procedures do the theories go through before they're deemed trustworthy and reliable and universally accepted.
#2868 to #2865

coronus (09/04/2014) []
A good theory is based on experimental evidence or mathematical proofs, and critically analyses the available evidence in such a way as to provide an explanation for how it fits together or what its cause was.
This starts as a hypothesis, with the expectation and responsibility to gather novel evidence through rigorous scientific methods, in order for hypothesis to become theory.
As a theory, it will only become accepted when a substantial amount of supporting evidence is gathered, little good disproving evidence exists, supporting results can be consistently replicated, and opposing or alternative theories are either less concise or garner less compelling evidence.
This starts as a hypothesis, with the expectation and responsibility to gather novel evidence through rigorous scientific methods, in order for hypothesis to become theory.
As a theory, it will only become accepted when a substantial amount of supporting evidence is gathered, little good disproving evidence exists, supporting results can be consistently replicated, and opposing or alternative theories are either less concise or garner less compelling evidence.
#2862

inspiteofsprite (09/03/2014) []
I heard that paper can only be recycled up to 7 times, which startled me a bit. Once the paper can no longer be recycled, what happens to it?
#2861

imtryingmybest (09/02/2014) []
do you think pharmaceuricals would want the cure for the flu and common cold or would they want to keep making money from flu shots and over the counter medicine
#2851

eight (09/01/2014) []
I was thinking about spacecrafts and was wondering how plausible they were with access to endless amounts of cash.
Think of a flat ship, or perhaps a cone shaped ship for less wind resistance, about the size of a small city, probably around 1520 million square feet. It would be massive, but instead of having a few powerful engines it would be propelled by thousands of smaller engines, doesn't really matter what kind of fuel.
Would it be capable, if propelled by so many engines, to take off from the ground and escape earths gravity?
Think of a flat ship, or perhaps a cone shaped ship for less wind resistance, about the size of a small city, probably around 1520 million square feet. It would be massive, but instead of having a few powerful engines it would be propelled by thousands of smaller engines, doesn't really matter what kind of fuel.
Would it be capable, if propelled by so many engines, to take off from the ground and escape earths gravity?
#2852 to #2851

aherorising (09/01/2014) []
ehhh, that's a bit too vague for a solid answer. But you should consider the fact that having a few powerful engines is just as good, if not better, than thousands of smaller engines. you'd have to think about how much thrust can be generated.
But I think it's unrealistic, because it'd likely break, or become very unstable due to wind currents. Metals can be strong, sure. But a ship that size would not remain rigid, and sounds very hard to control. I think a ballshaped design would be better.
But I think it's unrealistic, because it'd likely break, or become very unstable due to wind currents. Metals can be strong, sure. But a ship that size would not remain rigid, and sounds very hard to control. I think a ballshaped design would be better.
#2848

geothermal ONLINE (08/31/2014) []
If you put a solar panel in a mirrored box connected to a lightbulb, and gave it some starting power, how long do you think it could last?
What if:
Flawless Mirrors
100% Efficient lightbulb/solar panel
Some kind of power transmission that works on the mirrors surface
What if:
Flawless Mirrors
100% Efficient lightbulb/solar panel
Some kind of power transmission that works on the mirrors surface
#2860 to #2848

djequalizee (09/02/2014) []
If you're talking hypothetically that it wouldn't lose any energy then it could technically last forever. Although that would essentially be the same thing as a perpetual motion machine, and that's not really possible unless you figure out a way around the laws of thermodynamics.
#2846

mondamini (08/30/2014) []
So I'm going to be applying to university pretty soon, and I'm thinking of either doing some form of engineering or astrophysics.
Though I'm not sure about astrophysics, as its only really the new forms of transport that interest me like Warp drives and the EMDrive. Negative energy ain't too boring either.
The problem is, I don't know what the chances are of being able to study/research an area like this. The last thing I want is to go through 5 years of uni to get a job unrelated to space or to be stuck monitoring gamma ray bursts or space debris.
So is going for engineering a safer choice or should I take the risk of doing astrophysics?
Though I'm not sure about astrophysics, as its only really the new forms of transport that interest me like Warp drives and the EMDrive. Negative energy ain't too boring either.
The problem is, I don't know what the chances are of being able to study/research an area like this. The last thing I want is to go through 5 years of uni to get a job unrelated to space or to be stuck monitoring gamma ray bursts or space debris.
So is going for engineering a safer choice or should I take the risk of doing astrophysics?
#2912 to #2846

leightonsolomon (09/14/2014) []
I was thinking about studying astrophysics as well, but its true its not necessarily a stable field. Keep in mind, engineering is the number one career field right now. I hear people say to do what you love a lot, but being a an engineer would definitely benefit you. Maybe find a bridge between the two. An engineer for NASA or some other space related corporation would probably have the best of both worlds.
#2849 to #2840

feelythefeel (08/31/2014) []
Yes. Science, which is by definition is the study of the universe, is actually just all in our imaginations. In fact, let's just start from the beginning and see if we can come up with some less sexist and privileged science. If we hurry, we can rediscover fire before we starve to death!
#2836 to #2829

coronus (08/29/2014) []
If you're going to do ants and a spider, and you want it to last a while, you've got two options.
A: capture one of the flying ants, a few big ants from the same population (breeding workers), and some of the tiny foraging ants. The winged ants at the end of the summer are females who are looking to establish a colony due to their queen's recent death.
B: find the eggs, and dig them up along with he tiny ants near them. these are the youngest ants in the colony, who have recently hatched and are in charge of the nursery. With these, you could get lucky with gender ratios and produce a new queen to start a breeding colony.
In either case, you'll need to drop in some food for them to start with, and possibly a bit of sugar water near the corner you settle them in, so the ants can focus on reconstruction and colony formation.
Small jumping spiders will work in an environment with plenty of ground cover for them to hide; house spiders will work in anything, since they can generally build webs/ walk on glass.
A: capture one of the flying ants, a few big ants from the same population (breeding workers), and some of the tiny foraging ants. The winged ants at the end of the summer are females who are looking to establish a colony due to their queen's recent death.
B: find the eggs, and dig them up along with he tiny ants near them. these are the youngest ants in the colony, who have recently hatched and are in charge of the nursery. With these, you could get lucky with gender ratios and produce a new queen to start a breeding colony.
In either case, you'll need to drop in some food for them to start with, and possibly a bit of sugar water near the corner you settle them in, so the ants can focus on reconstruction and colony formation.
Small jumping spiders will work in an environment with plenty of ground cover for them to hide; house spiders will work in anything, since they can generally build webs/ walk on glass.
#2830 to #2829

istartedthewar ONLINE (08/29/2014) []
Never tried to make one, but i found one once when I was camping.
It was in a gatorade bottle from the 70's, and it had soil and a couple plants growing in it and shit. It was pretty cool.
I guess it wasnt completely closed though because it had no lid, but it was still pretty cool.
It was in a gatorade bottle from the 70's, and it had soil and a couple plants growing in it and shit. It was pretty cool.
I guess it wasnt completely closed though because it had no lid, but it was still pretty cool.
#2825

thereasonableperso (08/27/2014) []
I'm not sure where to put this. Is combinng like terms (in maths) relevant to any careers? I can't find anything about it.
#2826 to #2825

geothermal ONLINE (08/28/2014) []
You mean like...
10x+5+2x = 12x+5?
Thats like, basic fucking math. You need that in pretty much every career.
Like, shit, you have 4 packages of mcdonalds hamburgers, another 2 packages, and 5 spare burgers. One box = x so you have 4x+2x+5 = 6x+5
This is useful in everything.
10x+5+2x = 12x+5?
Thats like, basic fucking math. You need that in pretty much every career.
Like, shit, you have 4 packages of mcdonalds hamburgers, another 2 packages, and 5 spare burgers. One box = x so you have 4x+2x+5 = 6x+5
This is useful in everything.