Message in #general · Kappa⁴ Archive

Rex Bot May 7, 2016 9:07 PM general

its dangerous

Phijkchu_Pikachu May 7, 2016 9:07 PM general

So does water

Rex Bot May 7, 2016 9:07 PM general

you shouldent do dangerous things on planes

Rex Bot May 7, 2016 9:08 PM general

dihydrogen monoxide is now banned on planes

legorhin May 7, 2016 9:08 PM general

so you have to buy your dangerous chemicals from them instead

legorhin May 7, 2016 9:08 PM general

$$$$$$$$$$$$$$

Rex Bot May 7, 2016 9:10 PM general

the laws of science are now banned on planes for being dangerous

Rex Bot May 7, 2016 9:10 PM general

Kappa

JustinTrudeau May 7, 2016 9:10 PM general

legorhin May 7, 2016 9:10 PM general

solving for y is now banned

Rex Bot May 7, 2016 9:10 PM general

no fun allowed

Rex Bot May 7, 2016 9:10 PM general

you can only solve for x on planes

legorhin May 7, 2016 9:10 PM general

thats algebra and calculus

legorhin May 7, 2016 9:11 PM general

in differential equations you solve for y

Rex Bot May 7, 2016 9:11 PM general

solving for y is statistics Kappa

JustinTrudeau May 7, 2016 9:11 PM general

Rex Bot May 7, 2016 9:12 PM general

so what are differential equations and why do they use y anyway?

legorhin May 7, 2016 9:13 PM general

its when there are multiple levels of differentials in one equation

Rex Bot May 7, 2016 9:13 PM general

do I learn this in calc?

legorhin May 7, 2016 9:14 PM general

calc 4

Rex Bot May 7, 2016 9:14 PM general

so not ap calc

legorhin May 7, 2016 9:14 PM general

deffinitely not

Rex Bot May 7, 2016 9:14 PM general

well I guess he was a coleg professor

legorhin May 7, 2016 9:15 PM general

d²y/dt² + dy/dt + y = x

legorhin May 7, 2016 9:15 PM general

solve for y

Rex Bot May 7, 2016 9:15 PM general

derivitives...

Rex Bot May 7, 2016 9:15 PM general

I dont understand them

legorhin May 7, 2016 9:15 PM general

differentials

Rex Bot May 7, 2016 9:15 PM general

are the dy/dt not derivatives?

legorhin May 7, 2016 9:15 PM general

yeah

legorhin May 7, 2016 9:16 PM general

nvm

Rex Bot May 7, 2016 9:16 PM general

y = -d²y/dt² - dy/dt + x

Rex Bot May 7, 2016 9:16 PM general

do I win?

legorhin May 7, 2016 9:17 PM general

differentials are dt, dy, dx...

legorhin May 7, 2016 9:17 PM general

and no

Rex Bot May 7, 2016 9:17 PM general

hold on

Rex Bot May 7, 2016 9:18 PM general

I think I could do something here...

legorhin May 7, 2016 9:18 PM general

y(x) = c1 e^(-x/2) sin((sqrt(3) x)/2)+c2 e^(-x/2) cos((sqrt(3) x)/2)+x-1

legorhin May 7, 2016 9:19 PM general

i used the internet because I can't be bothered to look up how to solve these

Rex Bot May 7, 2016 9:20 PM general

this is as far as I got: y = d (-dy -y +xt^2)

legorhin May 7, 2016 9:21 PM general

thats not valid in any way

Rex Bot May 7, 2016 9:21 PM general

I probably broke some rule somewhere

legorhin May 7, 2016 9:21 PM general

and there was no t in the original

legorhin May 7, 2016 9:21 PM general

nvm

legorhin May 7, 2016 9:21 PM general

whoops

Rex Bot May 7, 2016 9:21 PM general

d²y/dt² + dy/dt + y = x

legorhin May 7, 2016 9:21 PM general

y''+y'+y=x

legorhin May 7, 2016 9:21 PM general

thats better

Rex Bot May 7, 2016 9:22 PM general

solve for y?

legorhin May 7, 2016 9:22 PM general

its the same thing

Rex Bot May 7, 2016 9:22 PM general

y = x - y'' - y'

Rex Bot May 7, 2016 9:22 PM general

Kappa

legorhin May 7, 2016 9:22 PM general

again I'm wrong

JustinTrudeau May 7, 2016 9:22 PM general

legorhin May 7, 2016 9:22 PM general

adding t makes that too complicated

legorhin May 7, 2016 9:22 PM general

not what i meant

legorhin May 7, 2016 9:23 PM general

y''+4y'+4y = x

is alot easier

Rex Bot May 7, 2016 9:24 PM general

why is there a random floating apostrophe?

Rex Bot May 7, 2016 9:24 PM general

or is that like a double prime or something?

legorhin May 7, 2016 9:24 PM general

yeah

Rex Bot May 7, 2016 9:25 PM general

y = (x - y'' - 4y')/4

Rex Bot May 7, 2016 9:25 PM general

Kappa

JustinTrudeau May 7, 2016 9:25 PM general

Rex Bot May 7, 2016 9:25 PM general

how does this even work

legorhin May 7, 2016 9:25 PM general

i forget

legorhin May 7, 2016 9:28 PM general

first you put all the y differentials on one side and solve that for zero

Rex Bot May 7, 2016 9:28 PM general

what about the x?

legorhin May 7, 2016 9:28 PM general

more work

legorhin May 7, 2016 9:32 PM general

it involves itegrals and some stuff you need to memorize

Rex Bot May 7, 2016 9:32 PM general

integral proteins?....

Rex Bot May 7, 2016 9:32 PM general

Keepo

JustinTrudeau May 7, 2016 9:32 PM general

Rex Bot May 7, 2016 9:32 PM general

differential equations:

lipid-bilayer.png 371.2 KiB · captured_local

Rex Bot May 7, 2016 9:32 PM general

Kappa

JustinTrudeau May 7, 2016 9:32 PM general

legorhin May 7, 2016 9:33 PM general

the quadratic formula is actually used to solve for zero

Rex Bot May 7, 2016 9:33 PM general

(-b +/- rad(b^2 -4ac))/2a

Rex Bot May 7, 2016 9:33 PM general

that?

legorhin May 7, 2016 9:34 PM general

yup

Rex Bot May 7, 2016 9:34 PM general

neat

legorhin May 7, 2016 9:34 PM general

only you use the order of differentiation instead of the exponent

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