Ask me Everything: Blu Version

[ikanaide]

In times like this, I wish the tex tag wasn't broken
integral from -3 to 3 of abs(x^2 - 2x - 3) dx is the mathematical problem you're solving for
Using absolute value, it's required to find where the inner function is equal to zero
In this case, x^2 - 2x - 3 = 0 for x=-1 and x=3
Because x=3 isn't an interior point within the domain, it's unimportant in calculation
With a zero found, the original integral is now equivalent to
abs(Integral [-3,-1] of (x^2 - 2x - 3) dx) + abs(Integral [-1,3] of (x^2 - 2x - 3) dx)
The indefinite integral of your original function is x^3/3 - x^2 - 3x
At -3, it's -9
At -1, it's 5/3
At 3, it's -9
abs(5/3 - (-9)) + abs(-9 - 5/3) simplifies to 64/3

Also, you're 16, right? You have Calculus class at this age?
At my school, nobody below last year (18 years old) of high school could take it

At -1, I have 11/3

why is wrong? >_<'
yes, i have cslculus class

[PLEASEHELP1991]

i'm not seeing anything wrong to be honest

[bluaki]

At -1, I have 11/3

why is wrong? >_<'
yes, i have cslculus class

- (-1)^2 = - 1
You have + 1

[bluaki]

why does compaq suck and make it impossible to open a laptop case so you can clean off a fan

I've never opened a laptop case before, so I don't know

I thought I've heard that Apple is the worst about being unable to open anything

[ME##]

bluaki just doesn't think differently with unibody designs that haven't changed since 2009

[ikanaide]

- (-1)^2 = - 1
You have + 1

aaaaaaaaaaaah shit
i have -(-1) = 1
           1^2 = 1
but correct is -1^2 = 1
                      -(1) = -1
i forget indicies is before multiply
thanks for help

[bluaki]

indicies is before multiply

They're called exponents, not indices

While exponents are usually represented as superscript (like e^x), indices are in math usually represented as subscripts (like x₁)

Sometimes giving numbers to each variable is more convenient than using a different letter for each, like for:
(x₁ + x₂ + x₃ + ... + x_n) / n
being the average (arithmetic mean) of a set of size n. These numbers are called indices.

[The Hand That Fisted Everyone]

why does the new chat thread suck

[Thyme]

why does the new chat thread suck

getting old

[Kalahari Inkantation]

getting told

[bluaki]

why does the new chat thread suck

It's hardly still a "new" chat thread, with almost half of its posts already made

also because Travis made it even though there was no reason this time for him to be the one to have the chat thread

[Thyme]

It's hardly still a "new" chat thread, with almost half of its posts already made

also because Travis made it even though there was no reason this time for him to be the one to have the chat thread

hmm, i think you're on to something

the... the chat thread may be cursed!

[silvertone]

travis is a Hero

[bluaki]

hmm, i think you're on to something

the... the chat thread may be cursed!

Wait, what else about it supposedly sucks?

[Thyme]

Wait, what else about it supposedly sucks?

i'm just being silly