Math Thread
| 2+2 is 4, minus 1 that's 3 quick maths.
| Last one is wrong
| 2^4 = 16 = 4^2
neat
| (f∗g,φ) = ∫f(x)g(x) φ(x+y)dxdy, ∀x,y ∈ R
| Can we do meth thread instead please :((
| >>1054690
She was just talking about her favourite chocomilk-chan album~
https://www.youtube.com/watch?v=L3B5sSVjGiQ
| >>1054681 i just checked few and last one not really...
you can always split numbers..
(30+70)+(3+7)=110
| >>1054883
Oh no, not you again.. Shoo-shoo, not with you! I will find that the special one. // I still hope. *_*
| Fuck maths
ε=ε=ε=ε=┌(;￣▽￣)┘
| How many starting points are there from which you can fly 100 km south, then 100 km east, and then fly north, 100 km again, and return to your starting point?
| >>1055272
Depends how much fuel is left because if is enough left in it then can fly back to starting point wherever you are yup
| Starting 100km. North of the South Pole, the eastern flight is just circling on a point so it works.
Starting 100km above the points in the northern and southern hemispheres where the circumference of the earth is a multiple of 100 kn also works
| >>1055307
Em..
>>1055308
That's right! Are there any other solutions?
>>1055352
It's not about that or anything like that, about finding the best way and saving fuel to your destination. You can fly only 300 km, no matter how long it takes you, regardless of the weather and other disturbances. And no, your answer is wrong.
| >>1055358
The first is wrong, the second is almost right! But there is only one solution for the north pole and its surroundings, and yes, there are endless solutions for the south Pole! But for a circumfl of 100 km, you need to move away from the south pole by ~16 km, so the starting points will be on a circumference ~116 km from the south pole. And, as you have noticed, "the circumference of the earth is a multiple of 100 nm," which means that it is closer to the south pole than 16 km.
| Ohh I never thought to slice the earth into a nice circle if changing radius like that! I was imagining it was some fancy 3d trig to get my distances!
Ok, so I can’t get far enough above that 16km latitude , ok so the options are- cheat using the rotation of the earth, the prior mentioned start a at the North Pole
| >>1055387
Yeah, this is a small problem from the "entertaining mathematics" series. Thus, due to the approach of cutting circles around the south pole, we end up with an infinite (even countable, as far as I remember) set of solutions.
| >>1055490
Do you recommend entertaining mathematics for someone with add and 131 IQ? I'm getting hella bored over here.
| funs c:
| >>1055535 why not?
But I think here it will require more tricky and complex ones.
Unfortunately, I do not know a one seems for this case, also I am not mathematician. Sorry.
| >>b7aad1
did you copy paste your earlier posts from somewhere? because they sound like two different people.
| >>1055614
Sometimes I use translator for correcting myself, sometimes don't, just like this post typing now. So, maybe that is why it looks like that?
| You’re charming in both cases :-)
| Not
| Not
| Nah?
Refresh
| 2 + 9 = 11
2 + 2 = 4
8 + 8 = 16
10 + 10 = 20
5 + 5 = 10
1 + 1 = 2
7 + 7 = 14
60 + 5 = 65
9 + 11 = 20
33 + 77 = 100