Description
This lesson leads into the introduction of matrix notation in the next lesson. The primary purpose of this lesson is to formalize the idea that when the complex number 𝑥 + 𝑖𝑦 is identified with the point (𝑥, 𝑦) in the coordinate plane, multiplication by a complex number performs a rotation and dilation in the plane. All dilations throughout this lesson and module are centered at the origin.
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From EngageNY.org of the New York State Education Department. Precalculus and Advanced Topics Module 1, Topic C, Lesson 20.
Available from engageny.org/resource/precalculus-and-advanced-topics-module-1-topic-c-lesson-20; accessed 2015-05-29.
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