# Futurebasic/Language/Reference/exp

# EXP function edit

## EXP edit

### Statement edit

✔ Appearance ✔ Standard ✔ Console

### Syntax edit

*result#* = **EXP**(*expr*)

### Description edit

Returns the value of the transcendental number "e" raised to the power of

. The number "e" is the base of natural logarithms, and is approximately equal to 2.718281828. The *expr*

function is used extensively in probability theory and in applied sciences.
**EXP**

is the inverse of the **EXP**`LOG`

function; that is:

equals **EXP**(LOG(x))`x`

.

always returns a double-precision result.
**EXP**

### See Also edit

LOG; LOG10; LOG2