7. (a) Let z = -1/2 + V3/2i. Write z in polar form and find the fourth roots of 2.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section9.8: Determinants
Problem 23E
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7. (a) Let z = -1/2+ v3/2i. Write z in polar form and find the fourth roots of
2.
0 5 1
9 4 9
2 1 2
the identity matrix, obtain the inverse of A.
(b) Let A =
By row reducing the matrix (A|I), where I is
(c) Use your answer to the previous part of the question to solve the system
of linear equations:
5y + z = 1
9x + 4y + 9z = 1
2x + y + 2z = 1.
Transcribed Image Text:7. (a) Let z = -1/2+ v3/2i. Write z in polar form and find the fourth roots of 2. 0 5 1 9 4 9 2 1 2 the identity matrix, obtain the inverse of A. (b) Let A = By row reducing the matrix (A|I), where I is (c) Use your answer to the previous part of the question to solve the system of linear equations: 5y + z = 1 9x + 4y + 9z = 1 2x + y + 2z = 1.
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