Question

Need help checking my answer - What is the range of the following function f(x)=x^2-5 if the domain is -2, -1, 0, 1, 2? - My answer in the comments.

Answer 1

Range = -5, -4, -5, -4, -5

Answer 2

@Directrix Just wondering if you don't mind helping me out.

Answer 3

plug each of the values of the domain in

Answer 4

and then the range is the smallest and the biggest values

Answer 5

I did and it turned out as the range I presented, just wondering if I got my answers right.

Answer 6

let me see.

Answer 7

Range = -5, -4, -5, -4, -5

Answer 8

well, it seems odd the wy you got those numbers, for instance, lets plug in -2 into f(x),
(-2)^2-5
4-5=-1

Answer 9

you see what i mean?

Answer 10

and your range should be an interval

Answer 11

Ah, damn, I miscalculated. Give me a mine to re do it

Answer 12

no prob : )

Answer 13

did you get it?

Answer 14

Range: -1, -4, -5, -4, -1

Answer 15

that sounds right : ) ok so your smallest value is -5 and your biggest is -1

Answer 16

so in an interval, that would be [-5,-1]

Answer 17

and thats your range

Answer 18

Is it possible to present a range in a set?

Answer 19

Range {-1, -4, -5, -4, -1}

Answer 20

mmm im not sure, if theyre telling you to do it you can

Answer 21

just to be sure write it as an interval also

Answer 22

Well, thanks :D

Answer 23

yw :)