# An exponential function has the form f(x)=b to the power x why b>0

2
by sumanthmortha

2014-10-03T14:40:51+05:30

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
In the form f(x) = b^x, It is not necessary that b>0. b can be both greater than and less than 0. But it can't be 0 because then f(x) will be 0 which is not a exponential function.
2014-10-03T18:39:21+05:30

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Exponential function :

Examples of some exponential functions are :

Generally they are studied like that.  if b > 0, then b^x is > 0 and f(x) > 0.

b can be taken as negative also, where it is needed. But in general when we talk about exponentially increasing function it is e^x and when it is exponentially decreasing we use e^-x.

If b = 0, then f (x) = 0, so it does not increase or decrease.