👉 In mathematics, a semi-angular function is a complex-valued function that takes as input a real variable and returns an imaginary number. It is often used in the context of Fourier analysis, specifically in the study of periodic functions.
A semi-angular function is defined by its derivative with respect to its argument:
f'(z) = A + B
e^(-cz)
where f(z) represents the complex-valued function, A and B are constants, and c is a complex number