/sci/ - Science & Math

mathematics PhD student here
if anyone has any questions on math grad school let me know and i'll reply whenever i decide to check the thread again

t. mathfag

Planning to start with bachelor Econometrics this year (similar to econ + math study combined, heavily math based). Do you guys have any advice for me to succeed in this study?

Will a PhD in organic chemistry make me able to synthesize LSD or DMT?

no

/hm/ is where I live now, someone send help.

Reason why I believe I should be doing integration by parts is because the entire assignment was integration by parts. I will be using /hm/

/Thread

Unsure how to apply integration by parts for this integral. Help me out?

>>5960999

The entire point of inventing numbers that don't work is so that you can solve those kinds of problems

The entire point of imaginary or complex numbers is to solve certain classes of algebraic problems.

There are two ways to represent a polynomial. There's the sum of products: a + bx + cx2 + dx3.. There's the product of sums: k(x+a)(x+b)(x+c)...

Now, every product of sums can be expanded by multiplying out the terms. But, with real numbers, not every sum of products can get factored into a product of sums.

Let's make one such example. x2 + 1. Let's factor it out with a dummy variable, j. So it's (x+j)(x-j) = x2 + 1, which means that j2 = -1.

Anyhow, this idea is called algebraic closure. It means that regardless of what polynomial you have, if numbers are complex, you can factor that shit.

>>5562357
ah i remember this
see that when you get those two "things"(X + 3) the same the 3xsquared and the -5 are then put in a seperate parentheses, thus if you would carry out the process of FOIL, you would get your starting equation. Youre basically simplifying the original equation.

Almost everybody here felt (feels) the same way at some point (but they don't want to admit it)

<span class="math">
\frac{\frac{1}{3}(\frac{1}{3}+1)+\frac{1}{5}(\frac{1}{5}+1)-\frac{1}{15}(\frac{1}{15}+1)}{2}1000^{2}
[/spoiler]

How would one go about creating a modulus function in a programming language where you can only use addition, subtraction, multiplication, and division?

I can think of one way (I'll be writing this in C-like code)
to calculate 8436 % 10:

int a = 8436; // declare integer value a
int b = a / 10; // b = 843 (integer division)
b = b * 10; // b = 8430
int c = a - b; // c = 8436 % 10 = 6

Are there any more efficient ways of programming something like this?

>>4923757
You're missing {{a,c},{b}}

>>4923765
A TROLL thread on probability. There's a difference between trolls and threads with merit.

>>4923754
>>4923742
>>4923743
Yes, I'm sure; it's stale troll copypasta. Also, very funny on the samefag, but you're trying too hard.

>>4923719
>>4923726
>>4923730
>>4923735
>>4923731
>>4923734
c'mon, guys, this is stale /sci/ troll copypasta.

staaaaaaaale

>>4819533
Thanks for the advice.

>>4819399
I study at ESFM, and i was thinking of studying at cinvestav, but i'm not sure if i should continue at ESFM on my master's degree or if i should go to cinvestav, what do you i should do?

captcha:
convocación itestns

B

Rook left two, from initial position.

>>4721050
The answer is no, that's not known. My post was entirely true.

Dumbass.

>>4721050
Oh, is it true for connected closed aspherical manifolds?