>>11461
And that's 220, if you don't know binomials.

>>11463
and thats 11011100 in binary, if you don't know the decimal system

>>11548

1101110

>>11549
Disregard this. I don't even.

Calculating Combinations - Mathematics - 420chan vibram five finger http://www.vibraminfivefingers.com/

>>10749
I don't think you are mad. The function is not a bijection because it's not surjective. The function doesn't give values for (0,1) in Q\{0}.

>>10742
Isn't what you're talking about just a counter-example? If then it works, of course. If not, I don't get what you're saying.

>>10747
There should be one, both sets are infinite and countable.
Since a monotonic bijection exists between Z and Z\{0}, I assume there has to be one between Q and Q\{0}.

if you have a proposition P(n) and you show that the converse P^-1(n) is not true for some n, that does not prove the original proposition.

Proof by contradiction - Mathematics - 420chan

Proof by contradiction - Mathematics - 420chan

>>11724
Yes, numerology is always nonsense. The only use reasonable people have for numerology is to have a fun way to play with numbers. By that, i don't mean "determine the true name of God using some alphanumeric code, a 6 sided die, the Bible, and a bucket of alphabet soup." I mean just playing with numbers in silly ways just to play with numbers.
Example of a healthy game: raise a number to the power of the preceding number. example: 1^0=1, 2^1=2, 3^2=9, 4^3=64
There's no magic there, no mysticism, just a mental exercise.

Or let's play a game with the "ultimate/divine number" 12 there are countless "divine" numbers because there aren't really any and you New Age whackos are some crazy and gullible bastards
12 is the best number because it starts with one, then proceeds to 2. 1 and 2 are next to each other, so just add them and you get 3. divide 12 by the sum of its digits, and you get 4. See how easy it is to get 1,2,3,4 out of 12? it must be magic, because i performed some abstract process to it (summation of the component digits). A reasonable person, if they liked numbers and math, would say "haha, that's neat, how far and abstract can we go with the number 12 and standard math operations? maybe fiddle with what number base we use?"
A numerologist would say "IT PROVES MAGIC IS REAL BECAUSE I USED A PLUS SIGN!"

>So please, help me make sense of this stuff like I know you guys can!

There are no sense to make here. You'll eventually make your own if you try hard enough: that's what numerology is all about. This guy >>11723 is right.

You'll get zero help from this forum because we're actual wannabe scientists and we like facts.
Try /tinfoil/ instead.


I'd love to be proved wrong. But you didn't said anything substantial in your post so there are nothing to prove or disprove.

how don't you idiots get it? 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 45 = 4 + 5 = 9 it's all about 9 so if I wrap some write around a torus 999999999 times it will create a time warp device that gives infinite free energy and cures cancer

>>11737
This guy gets it.

There's an observation made by Richard Guy called the "Strong Law of Small Numbers":

"There aren't enough small numbers to meet the many demands made of them."

There's a multitude of properties, relationships, and operations we can define upon numbers, but when you cram them into the space of 1 - 10, or 1 - 100, or 1 to Skewe's number, you don't have enough wiggle room to say that coincidences are anything more.
This "Strong Law" furnishes a lot of numerology (but also some surprising reversals in number theory, in that numbers don't reach "typical behavior" until they get very very big).

His paper contains a lot of these (>>11725) "games"
mathdl.maa.org/images/upload_library/22/Ford/Guy697-712.pdf

>>11736

>no algebra
>basic math

Fucking pre-algebra is as basic as it gets you ape

>>11744
Whoa dude chill. You make this board look like a bunch of elitist assholes.

OP, calculus and good arithmetic is absolutely necessary for stuff like Physics and Chemistry. If you want other mathematics for different applications, you should mention specifically what it is.

I don't have any links for you, sorry, but khan academy gets mentioned a lot around here. I don't know if it is good for refreshing your skills, but it is worth a try.

Best of luck.

Out of kilter algorithm - Mathematics - 420chan

Out of kilter algorithm - Mathematics - 420chan

Numerically.

nb because this is entirely unhelpful.

>>11680
1/cos

>>11682
I'd say numerically too, then.

>>11677
umm just use arccos

This is totally solvable with rearranging the variables and arccos.

>>11738
Oh shit jolly african-american what are you doing

>>11685
Well, yeah. But I don't really see it as an issue.

>>11698

The issue is that your graph doesnt have 4 as its min

>>11711
Woooooops. Sorry about that. Guess I made a mistake somewhere up there.

>>11712
The last number in the equation shouldn't be a 4, it should be 4+1/2(√32 - 4).

[math]
$y=\frac{\left(\sqrt{32}-4\right)}{2}\sin \left(4x-\frac{\pi }{2}\right)+4.8284271$
[/math]

all else is for fags

>>10231

i swear someone keeps bumping this thread

>>11335
thank GOD im not the only person who noticed that. i thought i was crazy hahaha

>>11337
it's the spam bots, kirt said they can't really move the threads back after deleting their posts

>>11335
DAT RATIO

>>11714
If you're enthusiastic about it, then I don't think you'll have too many problems. That's the most important part.

>>11714
The biggest part of Calc is just remembering how to do it. If you need to study, study like there's no tomorrow. I never really needed to study to remember things, but I definitely studied for my Calc exam. Other than that, it's not really so hard. Good luck.

It's the only formula that includes all the basic numbers. I don't know how this is useful though. Hopefully someone will explain

The proof showing how it is true is not that hard or gracious, and it isn't more useful than the general formula (pic related). What is important in the eyes of mathematicians is the simplicity of the formula, that uses really important numbers from different fields of mathematics. Mathematics isn't about usefulness, it's more about the deep relations between the abstract notions, and Euler's identity is the perfect example of that, and this is what we call gracious.

>>11663
Oops, scratch the \pi in the pic, it's not supposed to be here.

Just look at it. LOOK AT IT FFS

>e^pi*i = -1

What the fuck? You throw an exponential, pi and i in the same formula... And the result is still -1 ?
In the real set, there are no apparent connections between exponential and pi. In fact, e^pi = 23.14069...
Yet here it is, a clean and really simple relation between the 3 most used constants.
That's where the complex set and the imaginary unit shine.

With it you can show that i^i is a real number, which is neat. Also since it's based in cos(x)+isin(x) it lets you convert nasty periodic functions in physics into terms of e^(ipix), which are very easy to work with.

just do a lot of algebra problems with various functions. understand what a function is. make doing algebra second nature.

then youll be able to handle the ideas in calc 1 well, its basically advanced algebra

>>11620
this did help a lot, thanks man ill check some of this stuff out online.
>>11621
ill review my algebra too thanks

calc isnt as hard as some people say it is

i was super terrible at math all throughout high school and was forced to take pre-calc/calc in college. Just review your algebra

From what I've seen, pre calc is one of the worst maths. I didn't take it at all and went straight from math AB or whatever to AP-Calc, with no issue.

So, in order to reduce your anxiety about your coming Calc 1 class this summer, you ask us how you can prepare?

...
How about you study?
Google for a calc 1 textbook and start working through it.