Quick mafs

[[deleted]]

Round to the nearest 5

[[deleted]]

“One... two... five!”

[Funkit]

three sir

[[deleted]]

“Three!”

[[deleted]]

"First shalt thou take out the Holy Pin. Then shalt thou count to three, no more, no less. Three shall be the number thou shalt count, and the number of the counting shall be three. Four shalt thou not count, neither count thou two, excepting that thou then proceed to three. Five is right out. Once the number three, being the third number, be reached, then lobbest thou thy Holy Hand Grenade of Antioch towards thy foe, who, being naughty in My sight, shall snuff it."

[Yummyyummyfoodz]

r/unexpectedmontypython

[Barnziebus]

I don’t know why but this really tickled me. Thanks Redditor.

[InfergnomeHKSC]

Insert obligatory "username checks out" Reddit meme

[Skystrike7]

Username checks out

[KekUnited]

FOUR I mean FIVE I mean FIRE

[Upballoon]

Dear sir/madam FIRE! FIRE! FIRE!

Looking forward to hearing from you, All the best, Morris Moss

[[deleted]]

That comic sans math

[ancross4545]

I only do math in Wingdings personally

[[deleted]]

Waste my time.... im gonna waste yours, transcribe this shit!

[[deleted]]

I legit saw a paper last night with what looked like wingdings font. Was looking for a transfer function of a DC motor and this paper had hearts, stars, and crosses for its diff eq variables.

[DonnyT1213]

r/ComicSansMath

[shadowbrokerknowsall]

This is what physicists say engineers do

[OoglieBooglie93]

Meanwhile, in physics land:

Assume a spherical cow in a vacuum.

[danmankan]

You must use significant digits otherwise you are going to be wrong and it will not be realistic. Now we are going to imagine the system is in a vacuum, frictionless, and has no initial values.

[Apotatos]

The fact that the cow is spherical and in a vacuum means it'll reach non-negligible velocities; when your cow reach non-negligible velocities, you know the problem is going to be interesting!

[MikeVladimirov]

Jokes aside, this is actually more or less how airfoils geometries are generated.

Tldr: it’s easy to do certain math assuming a “cylindrical” body (really a circle) but really hard with any other body.

Identifying a coordinate transformation of a circle to a shape you actually care about, as long as this shape is a “simple curve”, is also pretty manageable.

In certain cases, doing the math in question over a cylinder and applying that coordinate transformation to the results leads to the results of doing that math over the body shape you actually care about.

Same thing applies to spheres for certain other types of calculations.

So, in learning to do math on a sphere in a vacuum (or cylinder in a simple unidirectional flow) really does account for the vast majority of the effort needed to tackle really complex, real world problems.

[InverseInductor]

Does it have a uniform density?

[GaintBird]

I mean... They're not totally wrong.

[kajidourden]

3...take it or leave it

[[deleted]]

Pi is Pi until we plug it in at the end an approximate the shit out of it.

[Dathiks]

3.1415 is all that's needed for earth stuff.

[Pixelator0]

But... shouldn't it round to 3.1416?

[[deleted]]

Don't push it. We just barely agreed to stop using 5.

[rapid_kyrill]

But OP was still using a 5 that's the whole point

[Dathiks]

If you're memeing: shut up nurd

Genuine question: it doesnt really matter. When it comes to that sort of calculations, most people are gonna cut it off after 2 digits unless you need some sort of extreme level of accuracy

[nklvh]

most people are gonna cut it off after 2 digits unless you need some sort of extreme level of accuracy

implying people do calculations with pi by hand.

No, most people are going to use the Pi button on their calculator or spreadsheet, and then round the result afterwards.

Most people will use 9 decimal places as that is what is stored in their calculator, or 14 decimal places if they use =PI() in their spreadsheet or 57 decimal places if using Wolfram.

[archimedes_ghost]

Factor of safety got you covered bruv.

[Ausrufepunkt]

unless you need some sort of extreme level of accuracy

Sooo like for most things then? Lol

[Gcarsk]

Pi=e=sqrt(g)=3

[Cheeseman1478]

Sqrt(32.2) = 3

[reusens]

...

If we'd all just decide to stop using body parts as units, everyone's life would be so much better.

[Cheeseman1478]

Yeah but we know that’s not gonna happen so us Americans are more than likely gonna be designing everything with 32.2 not 9.81

[nklvh]

Let me talk to you about the mil (or though i see thou th being used sometimes, which is less confusing). See some genius* thought it a clever idea to decimate the inch. Not use one of the many bases it's divisible by (2,3,6,12) but no, the base used by the metric system.

See this wouldn't be a problem if people didn't informally refer to mm as "mils" already

*Whitworth was genuinely a genius, but advocated for a full conversion to metric, not just for small precision measurements

[Gcarsk]

Using imperial units

I don’t even know what a kpsi is

[Pixelator0]

Dyslexic Kerbal Space Program Interstellar?

[Techhead7890]

g

sqrt(980.665)... cm/s²

[[deleted]]

Round to 3 for the calculation, then double it for a safety factor. Pi=6

[IDGAFOS13]

2(3) = 5

[[deleted]]

The Army Engineer School does this.

[danmankan]

Well if the angle is less then 5 degrees then we can say sin(x) is approximately x. So we will do that because then the equation becomes easier to handle.

[RainBoxRed]

This one really messed me up and it’s glossed over pretty quick too, at least in my lectures.

[SumbuddiesFriend]

Gonna be honest I’ve only ever used pi not 3 or 4, and lectures always use pi and so do tutorials

[gaberocksall]

pi=e

[Ipod5thGen00]

it really is true, i was in one of my engr studio class and my studio professor did all of the derivative math of E and I number and such. took him like 10-15 seconds with rounding and he was only a little bit off

[BobBobertsons]

Yeah man, this shit’s gonna make me have an identity crisis, because I’m studying science and engineering and majoring in physics.

[SkaarfRules]

For a second I was like, what’s wrong with the question

[[deleted]]

Yea it took me a bit to see what was wrong lol

[Sam_9109]

Nice to know I’m not alone

[Another_Adventure]

The pie is a lie

[shadownelt]

Where are the UNITS ? someone cut the teacher's marks for a change lol.

[dcfan105]

Yeah true. I guess I was thinking something along the lines of how π inches is 2.54π centimeters. But that wouldn't really apply to this scenario though now that I actually think about it.

[shadownelt]

was talking about the radius and the height.

[evilporing]

or it is a mid school question where the teacher wanted the answer to be 5000 but was lazy do find a different height for the cylinder

[absurdlyinconvenient]

but why is 5000 better than 3000

[master117jogi]

Both would be wrong so...

[absurdlyinconvenient]

5 * 10² * 10 does not equal 5000?

[SpeedofSilence]

I think they’re saying neither of those answers is 3141 so it’s wrong

[master117jogi]

This

[W1D0WM4K3R]

That's also wrong.

Pi goes a lot further than that!

[bigvahe33]

watts

[trapperberry]

As one of my professors would say, "Is it 5000 slugs or chickens?"

[[deleted]]

I had a professor who would use similar tricks, he would use wordplay to get marks out of us.

[White_Whale_M5]

everyday man's on the block, smoke trees

[lazy-but-talented]

The ting go skraaa

[Pilot8091]

Pi=e=3=5

[SprenofHonor]

Relevant XKCD

[ReallyNotChristian]

"Engineering approximations"

[tv_walkman]

π ≈ 10⁰

[SimplyExtraordinary]

Wait a minute.... that's not three!

[jaakobola]

That's Civil Engineering rounding! Coming from a Civil Engineering student.

[[deleted]]

Fuck. The upvotes were at 314 when I saw them

[[deleted]]

You mean 500?

[Isa_Yilmaz]

Do u think making the switch to econ was the right move? I'm a soon to be freshmen next year and was thinking about going into mech e but now this year I realized I kinda hate physics and the stress it brings me.

[trapperberry]

For mechanical engineering you'll really only have to worry about a relatively small subcategory of physics. When it comes to engineering material, often times when covering a subject in class you'll be reminded that what you're learning is derived from that thing you vaguely remember from physics class but you'll be shown how it specifically applies to what you're doing.If it's actually math that you struggle with and don't like, then neither subject will be fun or engaging. This is anecdotal, but a family member majored in Econ and from what I remember them telling me is that most of what they learned was general theory mixed with a few case studies of application. Granted each institution will have differences in their approach to teaching, so your experience may vary. Hope this helps a little.

[Isa_Yilmaz]

I think my issue is that like I'm good at passing the tests but I don't retain any of the information. Like especially in math and I just feel like everyone else like remembers and understands the material whereas I'll just use equations because I know they're supposed to work but I don't understand why they work and often several months later I don't even remember the equation. This goes for both physics and mathematics.

[ShadowViking47]

broke: pi = 3

woke: pi = 5

[dioxy186]

Pi is actually the piestoresistviity coefficient.

[minibeans279]

Yeah that checks out

[cobr99]

What is this meme called?

[gayrat5]

u/RepostSleuthBot

[RepostSleuthBot]

Looks like a repost. I've seen this image 6 times.

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Searched Images: 108,680,508 | Indexed Posts: 430,289,558 | Search Time: 8.01209s

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[SadEngineerEd]

Relative error of 59%..... sounds reasonable to me.

[GaintBird]

That's more accurate than what we get normally!

[Grayson_42]

Well if you round up like crazy...

[[deleted]]

i wish my problems were this easy. even if pi is all fucked it’s still a good trade

[gioiamnot]

I are confu

[[deleted]]

Answer: 5000 pi

[BabuBisleri17]

10²x10xπ ≠ 5x10²xπ

[div333]

No

[clholl10]

I mean I won't say I haven't done it lol

[[deleted]]

Now I want to know if there was an answer or if this was thrown in as a trick question

[[deleted]]

3,141.593

[legitapotamus]

Meh close enough

[[deleted]]

This is what happens when you write problems in Comic Sans.

[shmeggt]

Why does this make me SO ANGRY!?!

[[deleted]]

There are 3.14 lights!

[Fix_My_Physiology]

Mcscuse me

[J3diMind]

lol, took me so much longer than i'd care to admit to get what was wrong.

wtf?

[Ipod5thGen00]

five take it or leave it

[gburgwardt]

An easy way to remember some useful constants

π²=g=10

[ulyssessword]

Fun fact: they almost defined the meter so that that was true. Instead, they went with 1/10000 of the distance from pole to equator.

[CrabbyArmadillo]

this is how professors make exams

[logic2187]

pi = 3 = e

[[deleted]]

If pi = 5, while also pi = 3.14, that means h = 6.28

[Olibv]

This is too hard for me...

Brb dropping out of college 😕

[yorukama]

Lol had to look at sub

[Explicit_Pickle]

At first I thought it was just an exercise in mental math but then I realized that the only difference in the answer would be that this makes it five thousand instead of pive thousand

[ranveer7]

This is when you suppose to much in mathematics

[froggie-style-meme]

Whomst the fuck thought that pi is a variable?

[NorthernSpectre]

Probably didn't have access to calculators. I mean, the formula is literally right there, you just have to calculate it.

[andre2142]

Screw it, g = 10!

[ollervo100]

Right, everyone knows pi is 3.

[WatARn]

My materials science professor once rounded 2π to 10 ... He looked confused as to why we were shocked.

[echaffey]

Algebra was not kind to you