President of the Confederation
Elected for one year from the members of the Federal Council. Traditionally rotating among them. Chairs the meetings the Council and undertakes special representational duties.
... the roots of the equation. The formula reads
<math>
x=\frac{-b \pm \sqrt {b^2-4ac}}{2a}
</math>
The term b2 – 4ac is called the discriminant of ...