Problem:
Find the norm and argument (phase angle in radians) of $(-13-2 i) \log (2)$.
Answer:
Norm: $\sqrt{173} \log (2)$
Argument: $\tan ^{-1}\left(\frac{2}{13}\right)-\pi$
{'source': 'AMPS', 'file': 'amps/mathematica/algebra/complex_norm_and_arg/8537.txt'}