User manual - fx-991ES

– 118 –
4 X
3
−2X
2
−X＋2＝0を解く
A
N5(EQN)
4(aX
3
+bX
2
+cX+d=0)
1=y2=
y1=2=
=
c
c
5 X
2
−4X＋4＝0を解く
A
N5(EQN)3(aX
2
+bX+c=0)
1=y4=4=
=
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