atan

Inverse tangent in radians

Usage

atan(A)

• A should be an array, which can be real or complex.
• It returns an array containing the inverse tangent (in radians) of each element of A.
• For real elements of A ​, it returns values in $[-\frac{\pi}{2},\frac{\pi}{2}]$​​. (See example below.)
• For complex elements of A, it returns complex numbers.
• The output has the same size as A.

Example

Input

x = linspace(-1000,1000);
y = atan(x);
plot(x,y,'.-');
xlabel('x')
ylabel('atan(x)')

Output