Question

Determine the domain of the function.

f(x) = 4 / x^2

Answer 1

Decision and reason.

Answer 2

I do not know haha

Answer 3

What will make the denominator 0?

Answer 4

first think about what a domain is..... that might help a little

Answer 5

Recall that you can't divide by zero. So start by setting your denominator equal to zero is a good place to start

Answer 6

a domain is all values of x where the function does exist... basically you cannot have a 0 in the denominator

Answer 7

then like @vinnv226 said.... set your denominator equal to 0 and that will tell you what value makes the denomintor zero and therefore makes the function for that value of x not exist.... so this number is not part of the domain because it cannot be

Answer 8

@lornbeach You know the drill, you have to say something.

Answer 9

where denominator not =0

Answer 10

Haha drill ? Uhm okay so x^2 = 0

Answer 11

That's a start...
so, for what values of x would \[x^2=0\]?

Answer 12

0

Answer 13

And nothing else?

Answer 14

could it be x greater than or equal to 0

Answer 15

It's just 0.
@terenzreignz You're a terror!

Answer 16

No... I'm thorough :)

Answer 17

Brother's got rhymes too.

Answer 18

@lornbeach So, everything but 0 is in the domain.

Answer 19

all real numbers except for 0

Answer 20

boo yah

Answer 21

thank you, everyone !

Answer 22

See this, the graph starts acting crazy as it goes to zero.

https://www.google.com/search?q=4%2Fx%5E2&oq=4%2Fx%5E2&aqs=chrome.0.69i57j69i58j0l3j69i62.2888j0&sourceid=chrome&ie=UTF-8

Answer 23

Yes I see it ! Thanks @primeralph ((:

Answer 24

That's crazy?
THIS is crazy....
https://www.google.com/search?q=4%2Fx%5E2&oq=4%2Fx%5E2&aqs=chrome.0.69i57j69i58j0l3j69i62.2888j0&sourceid=chrome&ie=UTF-8#sclient=psy-ab&q=sin(1%2Fx)&oq=sin(1%2Fx)&gs_l=serp.3..0l4.9102.10379.1.10707.8.7.0.1.1.0.206.1114.0j6j1.7.0....0.0..1c.1.20.psy-ab.EMP36IZHIrQ&pbx=1&bav=on.2,or.r_qf.&bvm=bv.49967636%2Cd.dGI%2Cpv.xjs.s.en_US.jOYpRJj4zMA.O&fp=f5a1e0105e9cf76&biw=1366&bih=667

:3
Not that this is relevant in any manner :D