/sci/ - Science & Math

>the arclength of cosx from x=0 to 2π is non-elementary

I lift and I do sports. Senior math major here.

Feels okay man.

Not hard to have hobbies when no gf

hmm so yeah, I guess if you really wanted to be a troll, you could say that if they're "the same zero" then the answer is 1.

kill yourself faggot

>>4869005

2/10 if trolling, kill yourself if not.

>>4868960

No. You are not qualified to use that until you've already proven that .9999..=1, is what they're getting at. And I completely agree.

Go ahead and show that to 6th graders, but we're trying to discuss limits and shit.

>>4868958

I think it's the idea that we cannot genuinely comprehend what infinity is. (finite brains => impossible to comprehend infinite things)

Like "it never actually gets there" is not necessarily true.

Infinity is so humungous big. Too big to even describe. I mean, I could say there are G# 9's and that's a FUCKING IMPOSSIBLY HUGE amount of 9's. But it's still an unmeasurably small number when compared to infinity, as are all finite numbers.

Yeah.... Iuno.

>>4868933

Thanks man i've never seen that before. R u pHD?

Thsi man is genius!!!!!!!!!!!!!!!!!!!!!!!!!!!!

>>4868919

Alright so everything in the universe is either a natural number or NOT a natural number. (including my left testicle, which is not a natural number)

so .999...... is either a natural number or not.

Which is it?

>>4868886

I have not taken set theory, and I do not know if this is covered in set theory...

But....

Is there a way to prove that .9999... is a member of |N?

That shouuuulddd shut everyone up forever. No?

>>4868877

Density bro, density. DENSE.

If they're right next to each other, they're the same. On |R.

Alright so hmmm... I think I see what you're saying.

if .999...=1, then that means that .9999<span class="math">\in |N[/spoiler]

But that seems like something that would need to be proved. Intadesting.

>>4868861

Oh you guys are arguing about wether tho geo series proof is rigorous enough, not just wether .999...=1 or not?

I see I see.

I'm not huge on the geo series proof either actually, since it is a limit. Even though I have seen it in a few textbooks.

>>4868849

Another way of saying the same thing...

let a=.999... and b=1

b-a=0.000000000000000.......

So would people argue that 0.0000000000 != 0 as well?

I know it's not very formal. But chyea.

I just think of .99999...=1 based on the density of |R...

Like, I think there's an axiom or something saying that if a,b are numbers, and there is no c such that a<c<b, then a=b. Let a=.99999... and b=1, there's no c such that a<c<b..

So a=b

I'm not claiming to be an expert, just an econ undergrad here. But is there something fundamentally wrong with my thinking?

<span class="math">e^x=x[/spoiler]
<span class="math">\frac{d}{dx}e^x= \frac{d}{dx}x[/spoiler]
<span class="math">e^x=1[/spoiler]
<span class="math">xlne=ln1[/spoiler]
<span class="math">x=0[/spoiler]

>>4859327

>inb4 it could be division

Then you look at the graph where x=1.

Check a few spots. Then you must deduce that it's a multiplication argument.

And it's not "scientists" who did this. It's whoever made the specific program that you're using who decided that HE would like to use a dot for multiplication.

>>4859294
>>4859273

You're an idiot. First of all, dots have been used for multiplication a very long time. It's very standard.

But even if you didn't know that, notice that f(x)=0 at x=0? This means that the numerator must equal zero. And this means that the two terms in the numerator must be the same absolute value. This should tell you that both of them are actually e^(0) at x=0, and that should tell you that the dot is a multiplication argument.

And it doesn't take as much detail as i just described to explain it to you, but you should be able to figure it out yourself.

>>4859175

Actually most people who think they're average/above average are actually below average/average.

Sounds like you're just not ignorant, which is actually very good.

>>4845265

he didn't "come up with it", e arose naturally as the solution to a hefty handful of problems in mathematics.

pi is more easily grasped as it has the geometric interpretation very readily visible (circles).

>disgusting shit
>a science

i shiggidy wiggedy doo

>tfw this thread has been posted on average several times a day for the past four years (at least) and still gets replied to

Is this just a newfag detector or something?

>>4841740

>Not true, you mark results in significant figures. In the case of percentages the excepted total is 0-2 decimal points.

What in the FUCK are you trying to say? Do you have any idea how fucking stupid you are??

>>4841767

10/10, perfect post.

>>4841733

>It says here you attempt to win arguments on an anonymous japanese cartoon internet imageboard to justify how fat you are by employing ad hominem arguments, as well as accusing the opposing party of getting slightly off-topic. Care to elaborate?