The Mathematics thread

[HANZO]

i did it the same way as Prolifical ENG. thats correct.

and ironman it really dont matter which side you cancel out.

[Slippy The Pimp]

To illustrate:

2(x+4)=6(x+8)

if x=-10


2(-10+4) = 6(-10+8)

2(-6) = 6(-2)

-12 = -12

[Slippy The Pimp]

Two trains are racing around a square piece of land with a perimeter 500 km. Train A is speeding at 65 mph and train B is speeding at 95 mph but train A left a half hour before train B. What is the width of the piece of land?

[Prolifical ENG]

Two trains are racing around a square piece of land with a perimeter 500 km. Train A is speeding at 65 mph and train B is speeding at 95 mph but train A left a half hour before train B. What is the width of the piece of land?

I have a few questions:

1. Are the trains going the same way?
2. Is there supposed to be 2 measuring systems used and we need to convert to 1?
3. Is the land actually a square or a rectangle?

[HANZO]

if its a square the width is 125km

[Slippy The Pimp]

I have a few questions:

1. Are the trains going the same way?
2. Is there supposed to be 2 measuring systems used and we need to convert to 1?
3. Is the land actually a square or a rectangle?

Those questions are irrelevent to the question we're trying to answer. I stated in the question that it is a square piece of land.

if its a square the width is 125km

correct.

[Prolifical ENG]

hahaha thought so but I was thinking you were just making errors in the question

I guess thats the difference in treating a trivial math question published and one posted on a message board

[Slippy The Pimp]

hahaha thought so but I was thinking you were just making errors in the question

Did you take calucus? I'm not there yet, but I might need some help understanding some concepts when it comes to rise and run and shit like that when we get to those chapters in class.

[Slippy The Pimp]

hahaha thought so but I was thinking you were just making errors in the question

I guess thats the difference in treating a trivial math question published and one posted on a message board

Well I figure it's all relevent, becuase some text book questions give you useless information to throw you off.

[Prolifical ENG]

Yeah I took calculus for years....still use all the stuff I learned in those courses.

I guess you are talking about trigonometry.

That trick question that you put...you will see those...but they will be real ones. those trains will be going in all different directions, velocities, accelerations. Then you will have fun measuring the instantaneous angles and such.

[Slippy The Pimp]

Yeah I took calculus for years....still use all the stuff I learned in those courses.

I guess you are talking about trigonometry.

That trick question that you put...you will see those...but they will be real ones. those trains will be going in all different directions, velocities, accelerations. Then you will have fun measuring the instantaneous angles and such.

no doubt. I'm in intermediate algebra course now, I was just wondering on where you were at on your math so I know where to go for some tutoring. I figure i'm on here enough, I might as well start utilzing peoples expertise.

I fucked off on my math in high school, not realizing I was going into a field where I would need math.

I use simple algebra to calculate water use and future trends now. But for my IT degree I'm goning to need some more of the complicated algrebra stuff, and eventually I'll need calculus for my bachelors degree.

Plus these concepts help with programming too.

The course i'm going to have take eventually is discrete sturctures, but I don't know to much about that either.

[HANZO]

my maths is considered pretty advanced i jus finished off my first year at college studying aeronautical engineering. so far for a whole year we did nothing but maths and physics. the maths we do is engineering mathematics, your expected to be pretty flawless in algebra and the rest is learning about trigonometry, diffrentiation and integration. knowing a lot of maths though has made me hate it, i been doing it for soo many years and to think i got another 4 years of it to go.

[IrOnMaN]

ok here.....

I'm so stupid. I'm always making mistakes. Thanks.

[Prolifical ENG]

I have enough of an algebra background to graduate with pretty much anything except a pure mathematics degree.

In university I took 4 calculus courses in total where 2 of them require some of that algebra... such as advanced differential equations....vector and multivariate calculus.

I remember taking the computer science discrete math.

Thats as much as I need...those 4th year and master's degree math courses are fucked...glad I dont need to take those.

[Dokuro]

this thread is GZA

ok here it is

Question: What's the hardest math problem you've ever done?
mr john riddle

Answer 1:
It's invariably the one that I'm working on currently. This time
it's: What's the geometrical meaning of the central extension of the algebra
of diffeomorphisms of the circle?
jlu

Answer 2:
I've been working on a problem in Number Theory off and on for almost
ten years called "the Collatz Conjecture" aka "the 3X + 1 problem".
Let f(x) be a function defined on the positive integers such that:

f(x) = x/2 if x is even
f(x) = (3*x+1)/2 if x is odd

Then the conjecture is: iterates of f(x) will eventually reach 1 for any
initial value of x. Various cash prizes have been offered for the proof
or disproof of this conjecture.

yah he mad this a fianal