← Solving zⁿ = r cis θ and zⁿ = a + biQuestion 2 of 17 · AS91577

M

An Auckland RF designer places the poles of a filter at the solutions of z⁴ = 16 on an Argand diagram.

Only your final answer is marked, not your working.

M(a) Use polar form and De Moivre’s theorem to find all four solutions.