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lesson 6
1 hour

Complex Numbers and Vectors


Description

Students studied vectors as directed line segments in Grade 8, and in this lesson, vectors are used to represent complex numbers in the coordinate plane. This representation presents a geometric interpretation of addition and subtraction of complex numbers and is needed to make the case in Lesson 15 that when multiplying two complex numbers 𝑧 and 𝑤, the argument of the product is the sum of the arguments: arg(𝑧𝑤) = arg(𝑧) + arg(𝑤).

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Credits

From EngageNY.org of the New York State Education Department. Precalculus and Advanced Topics Module 1, Topic A, Lesson 6. Available from engageny.org/resource/precalculus-and-advanced-topics-module-1-topic-a-lesson-6; accessed 2015-05-29.
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