Register to reply

What does exp mean?

by ShawnD
Tags: None
Share this thread:
Feb6-04, 10:07 AM
Sci Advisor
ShawnD's Avatar
P: 986
I have a math expression which has what appears to be a function called exp() and I don't know what it means. It's on this site right here

Here is the link to the picture of the expression itself.

Does anybody know what exp is?
Phys.Org News Partner Mathematics news on
Math journal puts Rauzy fractcal image on the cover
Heat distributions help researchers to understand curved space
Professor quantifies how 'one thing leads to another'
Feb6-04, 10:20 AM
Sci Advisor
PF Gold
P: 39,682
"exp" means "exponential" function.
In other words, exp(x)= ex. It's used when it is to much trouble or too expensive to Add superscript on top of superscript. The example you give would have a fraction in the exponent. Actually, nowadays, with computerized word processors, it's relatively easy to print complex expressions and you don't see "exp" as much.

Lets see if it works in "tex":

[tex] r= D[e^{\frac{-1}{RT}\frac{\partial G}{\partial X}}-1] [/tex]

I wrote this originally, assuming that the question was only that "exp" seemed unusual. ex is, simply, the number e (about 2.18) to the x power. It is the inverse function to natural logarithm.
Feb8-04, 01:17 PM
P: 640
means experience :p

Register to reply

Related Discussions
Iron core energy change and transformers vs. ohms law Classical Physics 14
Difference between Identical , Equal , Equivalent Calculus & Beyond Homework 9