# Futurebasic/Language/Reference/exp

# EXP functionEdit

## EXPEdit

### StatementEdit

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### SyntaxEdit

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

### DescriptionEdit

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 AlsoEdit

LOG; LOG10; LOG2