Question

Can someone plz help me by explaining domain and range? Plz give me an example.

Answer 1

hello?

Answer 2

domain is the values of x that in a function in terms of y can take

Answer 3

hello~

Answer 4

yes I'm listening

Answer 5

range is the value of y, or the values that the function can take

Answer 6

lets take a simple example to begin with

Answer 7

y=x+1

Answer 8

now we can see x can take all values from -∞ to ∞ so that is the domain

Answer 9

similaryl as x ranges throughout the number line the value of y takes all values from -∞ tp ∞ so thats the range

Answer 10

ok I sorta get it now

Answer 11

now lets go a bit deep, take a tougher function say \[(x+1)/x-2\]

Answer 12

now we can see that x-2 in the denominator cannot be zero as the function is undefined

Answer 13

Could u plz explain where the question is in a word problem?

Answer 14

which word problem?

Answer 15

i just took a function and we are finding its domain and range

Answer 16

any word problem that you make up.

Answer 17

it is a random question

Answer 18

here I got one

Answer 19

You are packing books into boxes. The function y=20x represents the number y of books that will fit into x boxes.
a.)Is 4 in the domain?explain
b.)Is 60 in the range?explain

Answer 20

yes for both

Answer 21

This is a 2 part question please help me with it

Answer 22

Can u plz explain why it's yes.I got yes too before

Answer 23

ok we can see that the function can take the value x=4 right? there is no reason why it cant as the function is defined at that number so it is there in the domain

Answer 24

well yeah in real life

Answer 25

You can definitely have 4 boxes

Answer 26

yes you can actually relate it to real life

Answer 27

you cannot have infinite boxes

Answer 28

Yeah I'm supposed

Answer 29

That's what I'm suppose to write as the answer in my question

Answer 30

hello?

Answer 31

~~~~~~~~~~~~~~~~~~

Answer 32

sorry!!

Answer 33

lol i slept :P

Answer 34

It's k

Answer 35

You slept?

Answer 36

lol yea :P

Answer 37

lolz

Answer 38

ok thats a perfect answer

Answer 39

ok now the second part

Answer 40

for range 60 can be 1 as we can have 3 boxes in real life right?

Answer 41

yes

Answer 42

wait what?

Answer 43

I got Yes, because 60 books can go into 3 boxes , so Is it correct.

Answer 44

yes

Answer 45

20 books can go into 1 box

Answer 46

k good

Answer 47

so u get what u want? Anikate u sound indian :D

Answer 48

and u sound Indian too. Akshay Kumar lolz. JK

Answer 49

Well I gtg cya. Wait can we have friends on openstudy?

Answer 50

Like a friendslist?

Answer 51

lol thats how ppl remember me.. i am indian but not in india now, no we cant be friends on os but you can be my fan lol

Answer 52

OK cool I am USA

Answer 53

Well I gtg so cya