/jp/ - Otaku Culture

we have the internet we could just look it up.... you can't measure someone's math talent using the internet since they can cheat.

Can you keep it simple? I don't even know how to do algebra.

I forgot how do to basic mathematics. I was reading a computer book and it said something about powers, and I forgot how they work. Also I couldn't read more than a page.

Fuck you.

>Proof that

I don't know about math but

>>9810263
This

I could do this but I don't like doing maths through typing.

>natural number

Numbers don't occur in nature. They are human abstractions to quantify what we see and know.

What the HELL d00d...

Just google your homework...

http://en.wikipedia.org/wiki/Square_number#Odd_and_even_square_numbers

I don't know anything about mathematics or proofs or logic, but that sounds wrong. Are you saying this will apply for all values of a? Because it obviously doesn't. If you want a specific value of a where this occurs,
a = 1
a^2 = 1

>>9810270
Mathematical antirealists don't occur in nature. They are human abstractions to embody an untenable philosophical position.

jp - highschool dropouts

17?

>>9810280
1 is odd

>>9810283
I passed my math classes through expert guesswork and consulting the back of the book.

>>9810288
wut

what you done

1^2 = 1
3^2 = 9
5^2 = 25

Since it happened three times, it's probably going to happen four times. Since it happens four times, it will probably happen five times. Ad infinitum.

>>9810293

17 squared is 289...

I'm not sure what he's asking but if A is a variable I can do whatever I want with it so I made a = 17.

>>9810275
>Squares of even numbers are even (and in fact divisible by 4), since (2n)2 = 4n2.

>Squares of odd numbers are odd, since (2n + 1)2 = 4(n2 + n) + 1.
That's it?
Easy as fuck, I could have guessed it if I tried.

>>9810245
a = 2k+1
a^2 = 4k^2+4k+1 (let 4k^2+4k = n)
=> n+1, which is odd

>>9810263

here's some stuff to learn
its all you need to prove the stuff I proposed.
and a bit more

first two are aimed to kids I guess. but don't feel ashamed to read it. if you don't know, you don't know but you can always fix it.

third one is a bit more advanced.


http://www.mathsisfun.com/algebra/polynomials-multiplying.html

http://www.mathsisfun.com/algebra/introduction.html

http://www.purplemath.com/modules/polymult.htm

>>9810291
You're odd.

>>9810304
thumbs up if u think dis evrytime ur teacher solves a hard math problem xD

>'a' is odd

D-Do you think she would go out with me?

>>9810307

a is even -> a= 2*b+1

a^2= (2*b +1)^2 =4b^2 +4b +1 will ALWAYS be even.

Here you go.

I recommend How to Prove it by daniel velleman

>>9810305
you probably just googled but, yeah thats it

>>9810306
>mathsisfun.com

What a stupid domain name. Someone sat down and registered that domain name. That's so stupid.

Math is shit.
Math major from one of the top Math Universities, and now look where I am.

>>9810306
Why would I want to learn math? Math sucks.

How do I learn maths? I would prefer a textbook, but one that's aimed at the complete beginner but not a child.

No Khan Academy because I want a book.

>>9810322
I googled it right firrrrrrrst....!!!!

You should be praising meeeee...!!!

>>9810317
nope
a is odd -> a= 2*b +1
for example: 5 is odd 5 = 4 + 1 = (2*2) + 1

even numbers have the form 2*b
since the'yre all multiples of 2 and all that