User manual - fx-86_991DE_PLUS

G-37
Berechnungsbeispiele für den EQN-Modus
x + 2 y = 3; 2 x + 3 y = 4
N5(EQN) 1(a
n
X + b
n
Y = c
n
)
1 = 2 = 3 =
2 = 3 = 4 =
=
(X=) –1
c (Y=) 2
x – y + z = 2; x + y – z = 0; – x + y + z = 4
N5(EQN) 2(a
n
X + b
n
Y + c
n
Z = d
n
)
1 =- 1 = 1 = 2 =
1 = 1 =- 1 =0 =
- 1 = 1 = 1 = 4 =
=
(X=) 1
c (Y=) 2
c (Z=) 3
2x
2
– 3x – 6 = 0 B
N5(EQN) 3(aX
2
+ bX + c = 0)
2 =- 3 =- 6 ==
(X
1
=)
3 + 57
4
c
(X
2
=)
4
3 – 57
c
(X-Value Minimum=)*
3
4
c (Y-Value Minimum=)*
57
8
–
* Bei a  0 wird der lokale Mindestwert angezeigt. Bei a < 0 wird der lokale
Maximalwert angezeigt.
x
2
–
2
'
2
x + 2 = 0 B
N5(EQN) 3(aX
2
+ bX + c = 0)
1 =- 2 ! 2 )= 2 ==
(X=)
'
2
x
3
– 2 x
2
– x + 2 = 0
N5(EQN) 4(aX
3
+ bX
2
+ cX + d = 0)
1 =- 2 =- 1 = 2 ==
(X
1
=) –1
c (X
2
=) 2
c (X
3
=) 1
MathMath
MathMath