anonymous one year ago Give and example ( by writing an equation) of each of the following: a function whose domain is [0, infinity) a function whose domain is ( -infinity, infinity) a function whose domain is (-infinity, 0) u ( 0, infinity)

1. anonymous

help

2. anonymous

@sweetburger @Gemini_Nation_ @Firez @fishes220 help someone

3. anonymous

help

4. anonymous

@IrishBoy123 some one help i give medals!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

5. anonymous

ill help

6. anonymous

thanks

7. anonymous

one sec

8. anonymous

k

9. anonymous

f(x) = x + 1 for number 2

10. anonymous

f(x) = x + 1 for number 2

11. anonymous

1-x if x is greater than or equal to zero. third 1

12. anonymous

and finally the first 1 is f(x)= x +4 if x is less than zero

13. anonymous

did this help @Julianne6th

14. anonymous

yes

15. anonymous

is this right

16. anonymous

You can't take the square root of negative numbers, so the domain of $f(x) = \sqrt x$ is: $[0,\infty)$

17. anonymous

What is the domain of this function: $f(x) = 1/x$ (Think: what number(s) are you not allowed to plug in for x?)

18. anonymous

this is @cookiimonster627 question i posted it for him or her

19. anonymous

just FYI: the domains of both f(x) = 1-x and f(x) = x + 4 are all real numbers: that is, the interval (-infinity,infinity). Why? What number(s) can be plugged into 1 - x ? Any numbers! That is, you can subtract *any* number from 1. (and so on)

20. anonymous

Find more explanations on OpenStudy