Sharp EL-5230 - Manual (Page 74)

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Example 2
5x 3 + 4x 2 +3x + 7 = 0 → x = ?
1. Press b 3 3 to select
CUBIC of the EQN mode.
2. Enter the value of each coefficient (a, etc.)
5 e 4 e 3 e 7
• 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 cubic
equation.
• After solving, press e or j to
return to the coefficient entering display.
You can use @ h to solve the
cubic equation, regardless of the cursor
position.
Chapter 5: Equation Solvers
a=z 0.
b= 0.
c= 0.
X⁄–1.233600307
X¤ 0.216800153
+1.043018296i
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