Lösung 3.1:2c
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The expression <math>-3^2</math> means <math>-(3^2)= -9</math> (and not <math>(-3)^2</math>) and so we have that | The expression <math>-3^2</math> means <math>-(3^2)= -9</math> (and not <math>(-3)^2</math>) and so we have that | ||
| - | {{ | + | {{Abgesetzte Formel||<math>\sqrt{-3^2} = \sqrt{-9}\,\textrm{.}</math>}} |
The root expression <math>\sqrt{-9}</math> is not defined because there is no number which, when multiplied by itself, gives <math>-9</math>. | The root expression <math>\sqrt{-9}</math> is not defined because there is no number which, when multiplied by itself, gives <math>-9</math>. | ||
Version vom 08:35, 22. Okt. 2008
The expression \displaystyle -3^2 means \displaystyle -(3^2)= -9 (and not \displaystyle (-3)^2) and so we have that
| \displaystyle \sqrt{-3^2} = \sqrt{-9}\,\textrm{.} |
The root expression \displaystyle \sqrt{-9} is not defined because there is no number which, when multiplied by itself, gives \displaystyle -9.
