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Published byClaire Jenkins Modified over 9 years ago
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Lesson 2.4 Read: Pages 139-143 Page 137: #1-73 (EOO)
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Complex Numbers Objectives Students will use the imaginary unit i to write complex numbers, add subtract and multiply complex numbers, use complex conjugates to write the quotient of two complex numbers in standard form, and plot complex numbers in the complex plane.
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The Imaginary Unit
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The set of real numbers is a subset of complex numbers. Real Numbers Imaginary Numbers Complex Numbers
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Addition and Subtraction of Complex Numbers
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Perform the indicated operation.
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Multiplying Complex Numbers
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Complex Conjugates The product of two complex numbers can be a real number. This occurs with pairs of numbers of the forms a + bi and a – bi, called complex conjugates
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Plotting Complex Numbers The Complex Number Plane
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Plot each number in the Complex Number Plane a.-4 + 2i b.2 – 3i c.3 or 3 + 0i d.4i or 0 + 4i e.3 + 4i
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