MATLAB Function Reference |

Compute `exp(x)-1`

accurately for small values of `x`

**Syntax**

**Description**

`y = expm1(x)`

computes `exp(x)-1`

, compensating for the roundoff in `exp(x)`

.

For small `x`

, `expm1(x)`

is approximately `x`

, whereas `exp(x)-1`

can be zero.

**See Also **

expm | eye |

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