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Interne Kalkulationen werden mit 15stelliger Mantisse ausgeführt, wogegen die
Ergebnisse mit 10stelliger Mantisse und 2stelligem Exponent angezeigt
werden.
•Es kommt zu einem Fehler, wenn der Rechner die Gleichungen nicht lösen
kann.
•Durch Drücken der 1 (REPT) Taste wird an das anfängliche Display des
kubischen Gleichungsmodus zurückgekehrt.
kk
kk
k Gleichungen, die mehrere Wurzellösungen (1 oder 2) oder
imaginäre Zahlenlösungen erzeugen
Die nachfolgenden Beispiele zeigen, wie mehrfache Wurzellösungen und
imaginäre Zahlenlösungen verarbeitet werden.
uu
uu
uLösen einer kubischen Gleichung, die eine mehrfache Wertlösung
erzeugt
Beispiel Zu lösen ist die folgende kubische Gleichung:
x
3
– 4x
2
+ 5x – 2 = 0
bw-ewfw-cw
1(SOLV)
uu
uu
uLösen einer kubischen Gleichung, die imaginäre Zahlenlösungen
erzeugt
Beispiel Zu lösen ist die folgende kubische Gleichung:
x
3
+ x
2
+ x – 3 = 0
bwbwbw-dw
1(SOLV)
Es kann beachtliche Zeit dauern, bis das Rechenergebnis einer kubischen
Gleichung im Display erscheint. Dies stellt jedoch keine Störung des
Rechners dar.
Quadratische und kubische Gleichungen 7 - 3
133


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