Math

[delicate hawk]

∉

⊂

∈

⇒

⊄
I don't know how to explain it properly because on my homework it says fill with ∉ or ∈ and one of the questions is ¨-3 IN¨ its like a N with a straight line left to it, i've never learned this that's why i'm asking i don't want the answer i just wanna know how to solve it

[small bronze]

https://www.mathsisfun.com/sets/sets-introduction.html

$\vmathbb{N}$ is the set of natural numbers, which is either all integers greater than or equal to zero or strictly greater than zero depending n who you ask

[hardy root]

cloud ☁

[delicate hawk]

I'm not the best with this but it looks like you only showed the numbers that fit N but there are also others questions on my homework such as
3/5. Q
-2.0. Z
So basically what would be the best way for me to study it is there like an site/app that helps me with it or shall i rather ask peoole like as i am doing now

[small bronze]

https://www.mathsisfun.com/sets/number-types.html

[delicate hawk]

Ah thank you i appreciate it

⊂
⇒
⊄
If u don't mind me asking what are these then (sorry if i'm asking too much i gotta make a bundle with all math stuff i never learned and the teachers cant help me i gotta make it alone)

[small bronze]

⇒ is implies, ⊂ is subset and i think covered in the first link

[delicate hawk]

Oh alr thank you and last question the website of the link u sned me can i find the other questions there while it explains it to me

[still ridge]

$0\in\N$!!!!!!!

[hardy root]

Tangent

[still ridge]

how did you make \vmathbb

[honest temple]

I think you can try google "set notation exercise" to see if there's more to learn

[delicate hawk]

Okay thank you appreciate it have a good day

Wait i just searched it up and first thing that came up was corbettmaths

[honest temple]

do you have any particular struggling part in the above notations?

[honest temple]

yes?

[delicate hawk]

Is that where i need to go

[delicate hawk]

About 30pages of math questions i never learned

[honest temple]

you can try that if you feels ok with it, i clicked into the link and see there's a youtube video talking about the solution of it's exercise

[honest temple]

all about these notations?

[delicate hawk]

Uhh no its all different

[honest temple]

ouch

[delicate hawk]

My school wont even give me the math book to study it

Sigh

[honest temple]

do tell when you are struggling!
the server would be always here to help, as long as you don't mind waiting

[delicate hawk]

In 3weeks i have to give in the paper then im gonna get another bundle even harder with all stuff i didnt learn thats gonne be the last bundle tho

[delicate hawk]

Thanks ill prob focus on doing 2pages a day

[honest temple]

rushing through all the maths

[delicate hawk]

Seems like it will work

[delicate hawk]

Do you know the belgium school system aso bso tso

[honest temple]

sorry, i have no idea what are those

[delicate hawk]

Its like bso is mostly focused on working right after 6th/7th year

Tso is both ways working after 6/7th year or keeo studying

And aso is to keep stusying

Im in 2nd year bso yeah i wanna do tso next year

[honest temple]

ah

sounds difficult

[delicate hawk]

And i'l have to learn all the math from 1st year aso

Bso has simple math mostly thats why ive never seen this

Keep in mind this is only the first bundle

Sigh

[honest temple]

ah, that's why...

[delicate hawk]

Yeah

Also got a bundle like that for french

😭

[honest temple]

good luck!!

[delicate hawk]

Also after i make the uhh first 2 pages can i ping u to ask if its correct

[honest temple]

you'll definitely need some!

[delicate hawk]

Real

[honest temple]

yea, but i might not response in time

or you can wait for others to help too

[delicate hawk]

Do i jusr say it in here or do i say it in the helo channels

[honest temple]

oh, if it's another question, you can use the help channels outside, or the help-forum here

since the first message you type in will be pinned

and helpers can help you accordingly

[delicate hawk]

Which should i do

[honest temple]

and if case solved, you can type .close

from my experience, help-channels will not last long, so usually for some quick replies,

while forum can be followed, so people can keep on helping

[delicate hawk]

So shall i keep making new forums when i have a question about something else or shall i ask it in the same forum cuz it would be much forums considering its 30pages

[honest temple]

it's better to start new for different types of Q, it's easier to read that way.
but for sane type, it's good enough to stick within the same post

[delicate hawk]

Okay that's pretty much all i had to ask i think thanks and have a good day

[honest temple]

you too!

[woven wraith]

It depends :D

Some people say $\mathbb{N}$ include $0$, because natural numbers count things and there can be zero things, and some people say $0$ is not included

[hardy root]

Petr 16716875464

[woven wraith]

Basically the real reason is which definition is more convenient

Meaning the number of edge cases to handle at any given moment

If you're working with fractions in i.e. a series and mean numbers greater than 0 in the denominator, you can exclude 0

In combinatorics, as I said above 0 is in there

Notation I like is $\mathbb{N}_0$ which tells you it is there surely

[hardy root]

Petr 16716875464

[woven wraith]

I usually write it as \natnums, idk why this TeXit bot doesn't recognize it

[small bronze]

that sounds like a custom command which you would have to add to your preamble