Lösung 3.2:2d
Aus Online Mathematik Brückenkurs 2
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Version vom 10:36, 11. Mär. 2009
In general, the expression \displaystyle |z-w| is equal to the distance between the complex numbers \displaystyle z and \displaystyle w, so if we rewrite the equality in the exercise as
| \displaystyle |z-(1+i)|=3 |
it says that the distance between \displaystyle z and \displaystyle 1+i should be 3, i.e. we obtain a circle of radius 3 and centre at \displaystyle 1+i.
