# Dm

## TranslingualEdit

### SymbolEdit

**Dm**

## DanishEdit

### EtymologyEdit

From *definitionsmængde*

### SymbolEdit

**Dm**

- (mathematics) The domain of a specified function.
**Dm**(tan) = {x∈ℝ: x≠π/2 + zπ}, hvor z∈ℤ**The domain of**the tangent function is the subset of real numbers that are not equal to π/2 plus some multiple of π.