Sharp EL-5230, Руководство по эксплуатации

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70
Chapter 5: Equation Solvers
3. After inputting the last coefficient,
press
e
to solve the 2-VLE.
• After solving, press
e
or
j
to
return to the coefficient entering display.
You can use
@ h
to solve the 2-
VLE, regardless of the cursor position.
Example 2
x + y - z = 9 x = ?
6
x
+6
y
-
z
= 17 Ò
y
= ?
14 x -7 y +2 z = 42 z = ?
det(D) = ?
1. Press
b 3 1
to select 3-
VLE of the EQN mode.
2. Enter the value of each coefficient
(a1, etc.)
1
e
1
e S
1
e
9
e
6
e
6
e S
1
e
17
e
14
e S
7
e
2
e
42
• Coefficients can be entered using ordinary arithmetic operations.
• To clear the entered coefficients, press
j
.
• Press
d
or
u
to move line by line. Press
@ d
or
@
u
to jump to the last or top line.
3. After inputting the last coefficient, press
e
to solve the 3-VLE.
• Press
d
to display the det(D).
• After solving, press
e
or
j
to
return to the coefficient entering display.
You can use
@ h
to solve the 3-
VLE, regardless of the cursor position.
x= –1.
y= 2.
D= –3.
a⁄z 0.
b⁄ 0.
c⁄ 0.
x= 3.238095238
y=–1.638095238
Z
= –7.4
D= 105.