Question

Can someone Help?

For a Function F(X) = B^X the Domain is:

All Reals
All Reals Where X > 0
All Reals where y > 0
(0, *Infinty*)

Answer 1

I'm thinking All Reals.

Answer 2

Let's say the function is f(x) = 2^x
Try x=-1, f(x) = 2^(-1) = 1/2 That knocks out choice B and D.

Answer 3

Try setting y=0.
0=2^x
log0=xlog2
x=log0/log2
log0 is undefined, thus this knocks out C because there is no value of x that can yield y that is equal to, or less than 0.

Answer 4

Dude Thanks So much! i have one more question to ask but i'll make a new one so you can get another medal :P

Answer 5

You're welcome =)