## charlotteakina 3 years ago 9. Does f(x)=2.5 represent an exponential growth or decay equation? How do you know?

1. LollyLau

that is not a function at all.

2. piscez.in

@LollyLau it is a function

3. LollyLau

O RLY?

4. LollyLau

anything with f(x)? well erm it IS but it is of no use at all :S

5. LollyLau

horizontal graph lol

6. piscez.in

@charlotteakina yes you are

7. piscez.in

@LollyLau yes looks like a horzontal line and it is definitely a function

8. LollyLau

ok.

9. piscez.in

a DC current will look like this function with x representing time

10. piscez.in

@LollyLau

11. LollyLau

dc current ain't relevant lol

12. Fall12-13

F(x) = 2.5 It is not a function, because any function will have an 'x' with some coefficient. This is just a value. Also, the formula either for exponential or decay function isn't relevant to this one, so I don't think it is either a decay or an exponential function.

13. LollyLau

@piscez.in

14. Fall12-13

Adding to my previous post, F(x) = 2.5 is NOT a function because it's not in the form F(x) = 2.5x^2 or 2.5x or something. Ideally, a function is the one where you can select an input value and see the same for the output. For F(x) = 2.5 Whatever value x might have, the output is still 2.5 So, it's not a function, but rather, a constant value.

15. piscez.in

@ lollylau, yes, DC is a special case of a function, I know it because i studied all this in college. @Fall12-13 f(x) is a function with a constant value for all x. @charlotteakina No hun, its not an exponential or decaying function. Exponetial function= a^x Exponetially decaying functions= a^ (-x)

16. LollyLau

aw :(

17. LollyLau

college so what ? :(

18. LollyLau

bye

19. Fall12-13

@piscez.in Thanks for the rectification. But in either case, it still neither an exponential or decay function.

20. piscez.in

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