January 2015
Intermediate to advanced
1015 pages
318h 54m
English
Content preview from Algebra and Trigonometry, 5th Edition
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8.3 Complex Numbers: Trigonometric Notation
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Graph complex numbers.
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Given a complex number in standard notation, find trigonometric, or polar, notation; and given a complex number in trigonometric notation, find standard notation.
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Use trigonometric notation to multiply and divide complex numbers.
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Use DeMoivre’s theorem to raise complex numbers to powers.
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Find the nth roots of a complex number.
Graphical Representation
Just as real numbers can be graphed on a line, complex numbers can be graphed on a plane. We graph a complex number in the same way that we graph an ordered pair of real numbers . However, in place of an x-axis, we have a real axis, and in place of a y-axis, we have an imaginary axis. Horizontal ...
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