Question

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

Answer 1

that is not a function at all.

Answer 2

@LollyLau it is a function

Answer 3

O RLY?

Answer 4

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

Answer 5

horizontal graph lol

Answer 6

@charlotteakina yes you are

Answer 7

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

Answer 8

ok.

Answer 9

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

Answer 10

@LollyLau

Answer 11

dc current ain't relevant lol

Answer 12

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.

Answer 13

@piscez.in

Answer 14

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.

Answer 15

@ 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)

Answer 16

aw :(

Answer 17

college so what ? :(

Answer 18

bye

Answer 19

@piscez.in Thanks for the rectification.

But in either case, it still neither an exponential or decay function.