Mathematik
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== Analysis == | == Analysis == | ||
| - | <math>a x^2 + b x + c = 0</math> | + | <math>a \cdot x^2 + b \cdot x + c = 0</math> |
=> | => | ||
| - | <math>x_{1,2} = \frac{-b \pm \sqrt{b^2 - | + | <math>x_{1,2} = \frac{-b \pm \sqrt{b^2 - 4\cdot a\cdot c}} {2\cdot a}</math> |
== Geometrie == | == Geometrie == | ||
| - | <math>U = \pi | + | <math>U = \pi \cdot D</math> |
<math>U = 2 r \pi</math> | <math>U = 2 r \pi</math> | ||
Revision as of 12:42, 16 September 2008
Analysis
=>
Geometrie
