how am i supposed to find domain and range in this | Mathematics | Page 1

teal obsidian Sep 20, 2024, 4:39 AM

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paper fableBOT Sep 20, 2024, 4:39 AM

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teal obsidian

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slate thunder Sep 20, 2024, 4:40 AM

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teal obsidian

what do domain and range mean?

teal obsidian Sep 20, 2024, 4:40 AM

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like domain is x

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and range is y

slate thunder Sep 20, 2024, 4:41 AM

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what about x

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is domain the entire x axis?

teal obsidian Sep 20, 2024, 4:41 AM

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yuh

slate thunder Sep 20, 2024, 4:41 AM

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okay you dont know what domain is 😔

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is 6 part of the domain of this function?

teal obsidian Sep 20, 2024, 4:41 AM

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u have to put it in a order like {1,2,3}

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wym

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idk

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wait no it isnt

slate thunder Sep 20, 2024, 4:42 AM

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teal obsidian u have to put it in a order like {1,2,3}

{1,2,3} would be for a function that is like uhh

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this

vale dome Sep 20, 2024, 4:42 AM

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what x numbers does that function work with?

teal obsidian Sep 20, 2024, 4:42 AM

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i have no clue

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ik how to set up the answer up

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its js how do i get that from a line thing

slate thunder Sep 20, 2024, 4:43 AM

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teal obsidian its js how do i get that from a line thing

domain is
if say we have f(x), what values of x would give us a y value?

vale dome Sep 20, 2024, 4:43 AM

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don't analyze the line per say, look at it's projection on the x and y axis

slate thunder Sep 20, 2024, 4:43 AM

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for example, which of these exist?
f(0), f(-2), f(1), f(2), f(-6)

teal obsidian Sep 20, 2024, 4:44 AM

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f(2)

vale dome Sep 20, 2024, 4:45 AM

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no, x = 2 is outside of the domain

teal obsidian Sep 20, 2024, 4:45 AM

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oh u right

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f(0)

vale dome Sep 20, 2024, 4:46 AM

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as an example, f(0) = 3, so, what other numbers are in the domain?

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remember that x is the domain, and y is the range

teal obsidian Sep 20, 2024, 4:46 AM

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-2

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f(-2)*

vale dome Sep 20, 2024, 4:46 AM

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yes

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what more?

teal obsidian Sep 20, 2024, 4:46 AM

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ih

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uh

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f(1)

vale dome Sep 20, 2024, 4:47 AM

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no, the point at 1 is blank

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so it is the limit

teal obsidian Sep 20, 2024, 4:47 AM

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oh yeagh

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yeah

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u right

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forgot abt that

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f(-1)

vale dome Sep 20, 2024, 4:47 AM

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yes

slate thunder Sep 20, 2024, 4:47 AM

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btw what notation do you use, is it like
[-5,-3)

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or like the weird one

teal obsidian Sep 20, 2024, 4:48 AM

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{}

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them weird mfs

slate thunder Sep 20, 2024, 4:48 AM

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ew

teal obsidian Sep 20, 2024, 4:48 AM

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ik bro

vale dome Sep 20, 2024, 4:48 AM

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but it's not just whole numbers that are in the domain as you can see

teal obsidian Sep 20, 2024, 4:48 AM

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yeah

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they got negatives too

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and zero

vale dome Sep 20, 2024, 4:48 AM

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teal obsidian they got negatives too

negative numbers are also whole numbers

teal obsidian Sep 20, 2024, 4:48 AM

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no they intergers

slate thunder Sep 20, 2024, 4:49 AM

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vale dome negative numbers are also whole numbers

????

vale dome Sep 20, 2024, 4:49 AM

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ah, sorry

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problem of language translation

slate thunder Sep 20, 2024, 4:49 AM

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ah ok

teal obsidian Sep 20, 2024, 4:49 AM

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pjj

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ohh

vale dome Sep 20, 2024, 4:49 AM

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integers

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anyway, as you can see, there are more than only integers inside the domain

teal obsidian Sep 20, 2024, 4:49 AM

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yeah

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like decimals?

vale dome Sep 20, 2024, 4:50 AM

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yes

teal obsidian Sep 20, 2024, 4:50 AM

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oh okay

vale dome Sep 20, 2024, 4:50 AM

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even more

teal obsidian Sep 20, 2024, 4:50 AM

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yeah

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i dont think we are going to decimals for that though

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because we just started this unit

vale dome Sep 20, 2024, 4:50 AM

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since it''s a full line, we say it encompasses real numbers as well

teal obsidian Sep 20, 2024, 4:50 AM

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yeah

vale dome Sep 20, 2024, 4:51 AM

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you don't need to write every single number inside the domain

vale dome Sep 20, 2024, 4:51 AM

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teal obsidian {}

you can use those symbols to indicate the limit and everything in between it

teal obsidian Sep 20, 2024, 4:52 AM

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ohh

vale dome Sep 20, 2024, 4:52 AM

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slate thunder btw what notation do you use, is it like [-5,-3)

like the weird name guy used

teal obsidian Sep 20, 2024, 4:52 AM

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i js did it

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and it was wrong

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idk how

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i got no more tries in the question

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weird

slate thunder Sep 20, 2024, 4:53 AM

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so what you said is it ONLY works for -2, -1, 0, 1

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does anything in between those work? yes

teal obsidian Sep 20, 2024, 4:54 AM

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idk what itmeans by invalid inequality notation

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or wtv

vale dome Sep 20, 2024, 4:54 AM

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teal obsidian

you wrote the wrong bracket

vale dome Sep 20, 2024, 4:54 AM

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slate thunder so what you said is it ONLY works for -2, -1, 0, 1

and also that

teal obsidian Sep 20, 2024, 4:55 AM

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it mightve been greater than signs

slate thunder Sep 20, 2024, 4:55 AM

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well your notation is correct for a certain type of fucntion that is just dots

teal obsidian Sep 20, 2024, 4:55 AM

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like 1<y<1

slate thunder Sep 20, 2024, 4:55 AM

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but you need an x and stuff

teal obsidian Sep 20, 2024, 4:55 AM

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or something like that

slate thunder Sep 20, 2024, 4:55 AM

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yea like that

vale dome Sep 20, 2024, 4:55 AM

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teal obsidian like 1<y<1

yes

teal obsidian Sep 20, 2024, 4:55 AM

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i think i was supposed to do it like that

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i misinterpreted the question

vale dome Sep 20, 2024, 4:55 AM

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probably

vale dome Sep 20, 2024, 4:55 AM

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teal obsidian i think i was supposed to do it like that

i mean this

teal obsidian Sep 20, 2024, 4:56 AM

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yeah

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i have no clue how to do it like that though

slate thunder Sep 20, 2024, 4:56 AM

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okay heres a fun little diagram

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hope that helps

teal obsidian Sep 20, 2024, 4:57 AM

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how do i know whether to put greater than or less than signs

vale dome Sep 20, 2024, 4:57 AM

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smallest number in domain < x < biggest number in domain

slate thunder Sep 20, 2024, 4:57 AM

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is the range greater or less than -2

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right or left

teal obsidian Sep 20, 2024, 4:58 AM

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it goes right

vale dome Sep 20, 2024, 4:58 AM

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exactly

teal obsidian Sep 20, 2024, 4:58 AM

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so its greater than

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<

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this sign

vale dome Sep 20, 2024, 4:59 AM

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yes

teal obsidian Sep 20, 2024, 4:59 AM

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ohhhh

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i get it

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precciate it

vale dome Sep 20, 2024, 4:59 AM

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slate thunder is the range greater or less than -2

no, wait, range?

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I thought about domain

teal obsidian Sep 20, 2024, 5:00 AM

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oh no

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assignment went due

vale dome Sep 20, 2024, 5:00 AM

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write your answer here

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oh shit

teal obsidian Sep 20, 2024, 5:00 AM

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brooo

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at least i got 49 percent

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of it done

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so i get sum grade

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i can probably beg my teacher to reopen it

slate thunder Sep 20, 2024, 5:01 AM

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vale dome no, wait, range?

bad wording

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the range as in the image range thingy

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words

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moment

teal obsidian Sep 20, 2024, 5:02 AM

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ight thank yall for the help

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i cant really do the assignment no more

vale dome Sep 20, 2024, 5:02 AM

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well, at least write your answer here so we can see if you really understood

teal obsidian Sep 20, 2024, 5:02 AM

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ight give me one second

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to get it

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-2<x<1

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domain

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range is -1<y<3

vale dome Sep 20, 2024, 5:04 AM

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teal obsidian -2<x<1

there's something missing

vale dome Sep 20, 2024, 5:04 AM

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teal obsidian range is -1<y<3

also here

teal obsidian Sep 20, 2024, 5:04 AM

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the ineqaulity symbol

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i dont think i can put it

vale dome Sep 20, 2024, 5:04 AM

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it's because of the full point

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and the empty point

teal obsidian Sep 20, 2024, 5:04 AM

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yeah i would put ineqaulity symbol

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but discord dont let me

vale dome Sep 20, 2024, 5:04 AM

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teal obsidian yeah i would put ineqaulity symbol

which one?

teal obsidian Sep 20, 2024, 5:04 AM

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both

slate thunder Sep 20, 2024, 5:04 AM

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just type <= or >=

teal obsidian Sep 20, 2024, 5:04 AM

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oh yeah

vale dome Sep 20, 2024, 5:05 AM

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exactly

slate thunder Sep 20, 2024, 5:05 AM

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or if you know latex its $\leq \geq$

loud tokenBOT Sep 20, 2024, 5:05 AM

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!𒐪 ɹɐupoɯ⇂ㄥ8𝟝 𒐪!

teal obsidian Sep 20, 2024, 5:05 AM

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what the

vale dome Sep 20, 2024, 5:05 AM

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loud token **!𒐪 ɹɐupoɯ⇂ㄥ8𝟝 𒐪!**

ohh, convenient

teal obsidian Sep 20, 2024, 5:05 AM

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thats cool

#how am i supposed to find domain and range in this