Demoivre’s Theorem – Integral and Rational Indices
Demoivre’s Theorem – Integral and Rational Indices For any real number q and any integer n, (cosθ + i sinθ)ⁿ = cos nθ + i sinnθ If n is a rational number, then one of the values of (cosθ + i sinθ)ⁿ is cos nθ + i sinnθ. Note: (i) it is customary to write Read more about Demoivre’s Theorem – Integral and Rational Indices[…]