Yes, but is is not a function because 2 gets mapped to two different values (as does -3).
If those are the only values, no.
{2,-4,6,-5,-3}
If the terms are pairwise mappings ie f(2) = -3, f(-4) = 2 etc, then yes.
I was only able to get 13 but I think there can be more, this is what i got: 0+0+4=4 4+0+0=4 0+4+0=4 0+1+3=4 0+3+1=4 0+2+2=4 1+2+1=4 1+1+2=4 1+3+0=4 2+2+0=4 2+0+2=4 3+1+0=4 3+0+1=4
+4 +3 +3 -4 -3 -2 0 -1 +3 +1+1 0 +1
The range is {-3, 2, 0}.
If those are the only values, no.
{-3,2,0}
{-3,2,0}
yes
{2,-4,6,-5,-3}
{2,-4,6,-5,-3}
No, it is not a function.
The relation ship betwee them that Un+Un+1=5
If the terms are pairwise mappings ie f(2) = -3, f(-4) = 2 etc, then yes.
1 it is the difference between the highest and lowest number
no