คู่มือผู้ใช้
3.
• 2x
2
+ x - 3 = 0,
2
(a = 2, b = 1, c = -3): 2
1 3
•
•
!
•
:
, (M-),
(STO) Pol, Rec
4.
•
•
•
•
√
•
(EQN)
EQN
1: x + 2y = 3, 2x + 3y = 4
(EQN) (a
n
X + b
n
Y = c
n
)
1 2 3
2 3 4
(X=) -1
(Y=) 2
2: x - y + z = 2, x
+ y - z = 0, -x + y + z = 4
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