def make_from_real_imag(x, y): return get('make_from_real_imag', 'rectangular')(x, y) def make_from_mag_ang(r, a): return get('make_from_mag_ang', 'polar')(r, a) ...

**Imaginary numbers** are numbers of the form $bi$, where $i$ is the imaginary unit, defined as $i^2 = -1$. Imaginary numbers cannot be represented on the real number ...