# What do these symbols mean?

1. Aug 4, 2014

### BrainMan

1. The problem statement, all variables and given/known data
I have been reading a lot about physics and equation that look like the photo I attached. What do the brackets and the EXP mean?

2. Relevant equations

3. The attempt at a solution

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2. Aug 4, 2014

### matineesuxxx

I cannot see the attached image, however, if you mean something like this: $\exp (x)$ that is just the exponential function, so $\exp(x) = e^x$

It's just a more convenient way of representing the function when its arguments start to get complicated

3. Aug 4, 2014

### HallsofIvy

Staff Emeritus
The brackets are just that- a way of indicating a separate calculation, no different from parentheses.

4. Aug 5, 2014

### BrainMan

Here is a better picture
If someone could write it without EXP that would be great so that I know what you guys are talking about.

5. Aug 5, 2014

### Staff: Mentor

The exp() notation is useful though if you are writing an expression in some programming languages such as Java where

Code (Text):

double x = 3.2;
double y = Math.exp(x);       // refers to the e^x math function

For more general exponentiation then:

Code (Text):

double x =3.2;
double y = 4.3;
double z = Math.pow(x,y);     // for x^y math function

Last edited: Aug 5, 2014
6. Aug 5, 2014

### AlephZero

$I = C_1 + C_2 G - C_3(e^{\frac {V} {C_4T_{cc}}} - 1) - C_5(e^{\frac {V} {C_6T_{cc}}} - 1) - \frac {V} {C_7T_{cc}}$

7. Aug 5, 2014

### BrainMan

Where are you getting the e? Is that euler's number?

8. Aug 5, 2014