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2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math

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7203915 No.7203915 [Reply] [Original]

i or j ?

>> No.7203916

>>7203915
You're a faggot.

>> No.7203918

I, j if you need to go deeper

>> No.7203919
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7203919

guys I have another question. why do MIT professors in lessons on youtube talk so much?

its literally 70% filler with small talk / jokes
and 30% lesson

>> No.7203922

>>7203915
k was always my favorite quaternion

>> No.7203925

>>7203915
i

>> No.7203937

>>7203915
Since asian, i hat

>> No.7204315

>>7203915
j

i is reserved for current.

>> No.7204320

>>7203919

Making other people feel good is the key to landing one of those positions.

>> No.7204321
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7204321

r or l ?

>> No.7204358

>>7204320
Is that because you need to make students feel good to be a good teacher or because women are the ones doing the hiring and they can't put themselves past their feels?

>> No.7204379

>>7203915
i for the first letter of imaginary(not real) numbers

>> No.7204394

Why is there even a question?
http://en.wikipedia.org/wiki/Imaginary_unit
http://en.wikipedia.org/wiki/Split-complex_number

>> No.7204469

>>7203915
This is no question.

>> No.7204831

>>7204358
Well unless a student is a robot you gotta make them interested, and interest is more than just spewing facts, it's about conversation

>> No.7204838

>>7204315
electrical engineer input not welcome

>> No.7204915

I,j for countable index, alpha/beta for arbitrary

>> No.7205060

>>7204321
l if you're an idiot.
r if you've reached enlightenment.

>> No.7205066

i for the initial counter
j for nested counter

>> No.7205107

i.

That's the convention, and j means something entirely different.

>> No.7206450

>>7204838

Then you need to get off your electricity-converting computer connected to the electricity-signalling network that I am currently using to tell you that electrically speaking, you are a faggot.

Now being fair, since I am an engineer I am ALSO a faggot. The difference between you and I is that I fuck tight-arsed boys like you and you get fucked by hung guys like me.

>> No.7206546
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7206546

>>7203915
>j
>engineers

>> No.7206549
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7206549

>>7205066
>nested loops

>> No.7206557

Of course it depends on context. There aren't enough symbols for each to mean only one thing.

>> No.7206564

>>7205066
nice time complexity bruh

>> No.7207280

>>7206549

Nigger I got my diploma for a program that iterated over a 3D space. Triple nesting or gtfo.

>> No.7207301

>>7206564
P=NP confirmed

>> No.7207345

>>7207280
at some point in time I remember having to iterate over 4 variable of integration and being irritated at how to name the indices.

>> No.7207353 [DELETED] 

>>7207345
i j k l

>> No.7207394

>>7205060
There are people who are unironically this narcissistic.

>> No.7207401

>>7203915
i as often as possible. I'd rather use k than j I think. Just don't like it.

>>7203919
Youtube lectures are the worst for me because of that. It's not funny or cozy if you weren't there and don't know the professor one bit.

Also, that picture always makes me uncomfortable, even though I don't have claustrophobia.

>> No.7207407

>>7204315
Don't you only use "big i", I, for current? At least I do. In my mind i is reserved for indexes or horizontal direction if you put a ^ above it.

>> No.7207436

>>7207407
if it is a time varying current you use i
i as a direction can suck my dick, I use â_x y z etc

>> No.7208425
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7208425

i is for mathematicians
j is for engineers

as a physics student you just start writing a slightly curved stripe with a dot above it because each course switched i and j.

>> No.7208523

>>7207394
Isn't /sci/ one big narcissistic circlejerk?

>> No.7208525

>>7203915
I use j when I'm doing electrical engineering work and i everywhere else.

>> No.7208526

>>7203919
My lecturers are the same.

Especially our dean, he'll lecture for 5 minutes then talk about completely random things or go on a rant about how shit tier the other departments are etc.

>> No.7208543

>>7208425
Engineers are fuckken stupid. Just look at those imaginary reactances.

>> No.7208599

>>7203919
>its literally 70% filler with small talk / jokes
>and 30% lesson

literally every university lecture ever. good thing attendance is never mandatory.

>> No.7208603

>>7208425

then how the fuck do you work with quaternions?

>> No.7208693

>single letter variable names
shit tier for readability

>> No.7208696

>>7206549
nested loops are less efficient but easier to write. you might end up using more time trying to write an elegant solution than running an inefficient algorithm right off the bat.

>> No.7208702

>>7208603
hats.
Remember, quaternions were created to divide vectors.

>> No.7208749

r or rho ?

>> No.7208758

I for first level indexing and J if you do nested loops.

:^_

>> No.7208796

>>7203915
i before j but not after /g/a/y/

>> No.7208818

>>7203919
You should already know the shit.

>> No.7208829

Depends on which field you're working

>> No.7208831

>>7208749
rho for cilindrical coordinates, r for spherical