Function arctan 

pub fn arctan(arg: &Expression) -> Expression

Evaluate arctangent function

Mathematical Definition

arctan(x) = tan⁻¹(x), domain: ℝ, range: (-π/2, π/2)

Arguments

• arg - Expression to compute arctangent of

Returns

Arctangent expression

Examples

use mathhook_core::functions::elementary::trigonometric::arctan;
use mathhook_core::expr;

let result = arctan(&expr!(0));
assert_eq!(result, expr!(0));