To Find: The principal root and express the result in the form of
Answer to Problem 63SGA
The value of the principal root is 1 and the rectangular form is
Explanation of Solution
Given:
The given expression is
Calculation:
Consider the
Then, the polar form is obtained as, first calculate the amplitude.
The phase is obtained as,
Thus, the polar form is
The power of 7 by the De Moivre’s theorem is,
Chapter 9 Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
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