Lösung 4.1:6b
Aus Online Mathematik Brückenkurs 1
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,
In our case, we can write the equation as
and then we see that it describes a circle with centre at (1,2) and radius \displaystyle \sqrt{3}\,.
