a) Given u = 2 – i and v = i – 3. Express in the form a + ib. u? + v Hence, determine the modulus and argument of u? + v b) Given a complex number z = - 8i. i. Express z in polar form. ii. Find all possible values of zi and sketch them on an Argand dia- gram. c) Use De Moivre's Theorem to show cos(30) = 4 cos° 0 – 3 cos 0. COS Hence, obtain all solutions of x for the following equation Зх — 423 — 1. -
a) Given u = 2 – i and v = i – 3. Express in the form a + ib. u? + v Hence, determine the modulus and argument of u? + v b) Given a complex number z = - 8i. i. Express z in polar form. ii. Find all possible values of zi and sketch them on an Argand dia- gram. c) Use De Moivre's Theorem to show cos(30) = 4 cos° 0 – 3 cos 0. COS Hence, obtain all solutions of x for the following equation Зх — 423 — 1. -
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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