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'''Komplexe Zahlen'''
'''Komplexe Zahlen'''
−
In den komplexen Zahlen gelten folgende Rechengesetze:
+
In den komplexen Zahlen gelten folgende Rechengesetze:
−
1)(x<sub>1</sub> + i • y<sub>1</sub>) + (x<sub>2</sub> + i • y<sub>2</sub>) = (x<sub>1</sub> + x<sub>2</sub>) + i • (y<sub>1</sub> + y<sub>2</sub>)
+
1) (x<sub>1</sub> + i • y<sub>1</sub>) + (x<sub>2</sub> + i • y<sub>2</sub>) = (x<sub>1</sub> + x<sub>2</sub>) + i • (y<sub>1</sub> + y<sub>2</sub>)
−
2)(x<sub>1</sub> + i • y<sub>1</sub>) - (x<sub>2</sub> + i • y<sub>2</sub>) = (x<sub>1</sub> - x<sub>2</sub>) + i • (y<sub>1</sub> - y<sub>2</sub>)
+
2) (x<sub>1</sub> + i • y<sub>1</sub>) - (x<sub>2</sub> + i • y<sub>2</sub>) = (x<sub>1</sub> - x<sub>2</sub>) + i • (y<sub>1</sub> - y<sub>2</sub>)
−
3)(x<sub>1</sub> + i • y<sub>1</sub>) • (x<sub>2</sub> + i • y<sub>2</sub>) = (x<sub>1</sub>x<sub>2</sub> - y<sub>1</sub>y<sub>2</sub>) + i • (x<sub>1</sub>y<sub>2</sub> + x<sub>2</sub>y<sub>1</sub>)
+
3) (x<sub>1</sub> + i • y<sub>1</sub>) • (x<sub>2</sub> + i • y<sub>2</sub>) = (x<sub>1</sub>x<sub>2</sub> - y<sub>1</sub>y<sub>2</sub>) + i • (x<sub>1</sub>y<sub>2</sub> + x<sub>2</sub>y<sub>1</sub>)
−
4)(x<sub>1</sub> + i • y<sub>1</sub>) / (x<sub>2</sub> + i • y<sub>2</sub>) = (x<sub>1</sub>x<sub>2</sub> + y<sub>1</sub>y<sub>2</sub>) / (x<sub>2</sub>²+ y<sub>2</sub>²) + i • (x<sub>2</sub>y<sub>1</sub> - x<sub>1</sub>y<sub>2</sub>) / (x<sub>2</sub>²+ y<sub>2</sub>²)
+
4) (x<sub>1</sub> + i • y<sub>1</sub>) / (x<sub>2</sub> + i • y<sub>2</sub>) = (x<sub>1</sub>x<sub>2</sub> + y<sub>1</sub>y<sub>2</sub>) / (x<sub>2</sub>²+ y<sub>2</sub>²) + i • (x<sub>2</sub>y<sub>1</sub> - x<sub>1</sub>y<sub>2</sub>) / (x<sub>2</sub>²+ y<sub>2</sub>²)
−
+
(Division nur im Falle von x<sub>2</sub> + i • y<sub>2</sub> ≠ 0)
−
5)Division nur im Falle von x<sub>2</sub> + i • y<sub>2</sub> ≠ 0
=Zahlenbereiche im Mathematikunterricht=
=Zahlenbereiche im Mathematikunterricht=