pc 6.5 b_notes
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February 17, 2012
6.5 Notes: Part 2DeMoivre's Theorem and Nth RootsObjective: Use DeMoivre's Theorem to find complex numbers raised to a power.
Standard: Math Analysis 2.0
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Review:Trig form:
Multiplying Complex Numbers in Trig form:
Dividing Complex Numbers in Trig form:
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DeMoirve's Theorem
﴾a+bi﴿n =
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Ex. 1﴿ Evaluate ﴾1 + i﴿6
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Ex. 2﴿ Find ﴾3 2i﴿8
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Ex. 4﴿ Find
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Nth RootsSolve x4+1=0
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Nth Roots Theorem
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Ex. 5﴿ Find the fourth root of 625i.
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Ex. 6﴿
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Ex. 7﴿
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Assignment:
6.5B p. 479 #71103 ﴾odd﴿
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