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Lösung 4.1:6b

Aus Online Mathematik Brückenkurs 1

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A quick way to interpret the equation is to compare it with the standard formula for the equation of a circle with centre at (a,b) and radius r,

(x−a)2+(y−b)2=r2.

In our case, we can write the equation as

(x−1)2+(y−2)2=(3)2 

and then we see that it describes a circle with centre at (1,2) and radius 3 .


Von „http://wiki.sommarmatte.se/wikis/2009/bridgecourse1-TU-Berlin/index.php/L%C3%B6sung_4.1:6b“