Complex numbers operations

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7 Terms

1
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Addition

Z1 = a + bi

Z2 = c + di

Z1 + Z2 = (a + c) + (b + d)i

2
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Subtraction

Z1 - Z2 = (a - c) + (b - d)i

3
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Multiplication

Z1 * Z2 = (a + bi)(c + di) = (ac - bd) + (ad + bc)i

4
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conjugation

^-z^-= a - bi

5
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Modulus

|z| = \sqrt{a² + b²}

6
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Cycles of i

i

i² = -1

iÂł = -i

i^4 = 1

i^5 = i

7
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