19 lines
504 B
Markdown
19 lines
504 B
Markdown
# Lecture 14 --- Problem Solving Techniques
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- Operators as non-member functions, as member functions, and as friend functions.
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## 14.1 Complex Numbers — A Brief Review
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- Complex numbers take the form z = a + bi, where i =
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√
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−1 and a and b are real. a is called the real part, b is
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called the imaginary part.
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- If w = c + di, then
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– w + z = (a + c) + (b + d)i,
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– w − z = (a − c) + (b − d)i, and
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– w × z = (ac − bd) + (ad + bc)i
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- The magnitude of a complex number is √
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a
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2 + b
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2
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