Solution 3.2:2d

From Förberedande kurs i matematik 2

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m (Lösning 3.2:2d moved to Solution 3.2:2d: Robot: moved page)
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In general, the expression <math>|z-w|</math> is equal to the distance between the complex numbers <math>z</math> and <math>w</math>, so if we rewrite the equality in the exercise as
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<math>|z-(1+i)|=3</math>
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it says that the distance between <math>z</math> and <math>1+i</math> should be <math>3</math>, i.e. we obtain a circle of radius <math>3</math> and centre at <math>1+i</math>.
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Revision as of 10:54, 3 October 2008