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/sci/ - Science & Math


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4702877 No.4702877 [Reply] [Original]

If you're required to mathematically demonstrate something but not prove it, how should you conclude your working?

Should you finish with Q.E.F. (quod erat faciendum - 'which was to be done'), a statement saying something akin to "Therefore, x is equal to y for all m", or something else entirely?

>> No.4702879

QED ~ which was to be demonstrated

>> No.4702883

In math, a demonstration is a proof

>> No.4702889

>>4702883
>>4702879
Even on, say, an exam question that requests something like "show that f '(x) = g(x)"?

>> No.4702892

>>4702889
they won't expect faggy latin. just clear logical steps, with brief explanations of what you are doing if it isn't totally obvious.

is this for STEP or some shit?

>> No.4702896

>>4702892
First-year engineering maths.

I know it isn't entirely necessary, but I might as well do it correctly wherever possible.

>> No.4702898

>>4702896
just use therefore, or the therefore symbol

>> No.4702901

>>4702898
So, the second option in the OP.
Thank you, you may leave now.

>> No.4702904
File: 76 KB, 401x400, gtfo.jpg [View same] [iqdb] [saucenao] [google]
4702904

>>4702896
>engineering maths

GTFO and stop wasting our time

>> No.4702909

>>4702901
>homo

>> No.4702911

>>4702909
>

>> No.4702912
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4702912

>>4702896
>engineering maths

You are not doing actual adult math. You don't need to use proper adult terms. Most engineers couldn't construct a proper proof if there fucking life depended on it.

No one is gonna expect you to know actual math or logic. All you need to do an an engineer is you shitty baby math. Just follow orders and don't ask questions. It is the engineering way.

\thread

>> No.4702914

>>4702912

This.

>> No.4702919

>>4702912
>>4702904
I don't understand the hate behind engineering maths, in my country it's the entirety of the hardest year 12 maths and everything that is normally done in first year engineering maths in our countries compressed into a single semester.

In the year 12 textbook that I'm working through, we have to construct simple proofs every couple of questions.

I mean, really? Just because we solve bigger problems than you guys and we do it with computers doesn't mean that we're in any way inferior.
Can't we all get along, regardless of your useless degrees?

>> No.4702918
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4702918

>>4702912

>> No.4702922

>>4702919
>can't we all just get along
OP started the hate.>>4702901

>> No.4702924

>>4702922
>Implying you didn't start it
>>4702892

>> No.4702925

>>4702912
You don't know what you're talking about. I've had to give tons of proofs on past exams. Stop acting like engineering isn't totally awesome. It is. It's not easy. It's very hard (60% won't make it). I'm not claiming it's better then other good stuff like math, physics,.., but I it is very very toptier.

Also: yes, I'm gay.

>> No.4702926
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4702926

>>4702919
>engineers
>solve bigger problems

I literally fell out of my chair laughing

>> No.4702929
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4702929

>>4702925
>engineering
>top teir

/sci/ is full of comic gold! Keep it coming!

>> No.4702934
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4702934

>>4702919
>engineer
>construct simple proof

I guaran-fucking-tee YOU HAVE NO IDEA WHAT A PROOF ACTUALLY IS.

Whatever it is you're doing is not a proof.

>> No.4702935

>>4702926
Oh okay, I'll just assume that you work on bigger problems than engineers.
Your computer? Totally either designed by mathematicians or too simple to merit their work.

>> No.4702936

>>4702924
are you a roman, or a medieval scholar?

no.

so keep your butt hurt about latin being faggy.

you're way to sensitive for /sci/

>> No.4702940

>>4702925
>>4702919
It is so so so cute to see these little engines pretending they know what a proof is.

>> No.4702949
File: 51 KB, 364x469, u-mad-11518-1298062748-1.jpg [View same] [iqdb] [saucenao] [google]
4702949

>>4702935
>Implying research scientist don't design there own computers
>leaving only the simplest grunt work to engineers or robots

>> No.4702951

>>4702949
>there

Mathematikid detected

>> No.4702952

>>4702940
fuck, you got me. I'm actually starting to feel a bit of rage :(

>> No.4702953

>>4702877
I put "As required."

>> No.4702957
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4702957

>>4702919
Let me get this straight.
You are boasting about how you do advanced engineering math is highschool? Thinking this somehow implies engineering math is hard?

So hard that the typical higher could actually do that shit without problem?

You are refuting your own point son. Engineering math is extremely easy compared to most other math. That is why a highschooler could fucking do it! Fuck a trained monkey could do engineering math. It is 99% just following instruction, and requires little to no critical thinking ability.

I am not trying to put you down, but jesus fucking christ don't get a big head. What you are doing is just shit. Anyone with a fucking brain knows it.

I mean if you enjoy mindless grunt work, then by all means stick to that shit. If you are ever ready for an actual challenge you should consider something else.

>> No.4702964

>>4702877
>>4702877
>engineer

I'm not sure what the latin for homosex is? Google?

>> No.4702970
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4702970

>>4702957
That will show them homosexuals!

>> No.4702971

>>4702957
I think he was referring to the large workload.

>> No.4702972

>>4702957

>It is 99% just following instruction, and requires little to no critical thinking ability.

This is very true.

>> No.4702974
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4702974

>>4702971
>engineers
>start talking about "loads"

>> No.4702978

>>4702974
>large ones

>> No.4702981

>>4702978
>large ones that make you work

>> No.4702996
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4702996

>>4702981
>engineers require "large loads" in order to work

Is it some kind of work for cum program?

>> No.4703008
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4703008

>>4702996
Yes, yes it is

>> No.4703014

>>4702957
You just jelly.

>> No.4703016
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4703016

>>4703014

>> No.4703017

>>4703014
>jelly of walking around with 10 men's cum in my rectum

>> No.4703020

>>4703017
Everyone in this thread is an engineer?

>> No.4703022

>>4703017
ITT: engineers express their fantasies

>> No.4703026
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4703026

>>4703016
>>4703016

>> No.4703029

>>4703026
>>4703016
I have never seen people so happy.
It is like they live for cock!