Compare and contrast domain and range of following: f(x) = 2^x – 1 and g(x) = –2^x – 1.

Question

Compare and contrast  domain and range of following: f(x) = 2^x – 1 and g(x) = –2^x – 1.

anonymous · Answer

If somebeody can help I just have to make sure I have the right answer

hero · Answer

Is the domain the same or different?

anonymous · Answer

domain is the same, all real number, right?

hero · Answer

Yes

anonymous · Answer

and range wouldn't be the same as y>0?

hero · Answer

Would it?

anonymous · Answer

I guess so, am I right?

hero · Answer

hero · Answer

In order for the range to the same, both graphs would have to span the same vertical boundary along the y-axis

anonymous · Answer

I understand so their range is like a refelction, they have opposite range, positive graph increases, while negative decreases?

hero · Answer

Yes, I suppose you could describe it that way.

hero · Answer

Your teacher might want to to post the actual numerical values for the range

anonymous · Answer

ok, thank you hero, you made it as clear as possible :)

hero · Answer

Well, I try