Sharp EL-5250, EL-5230 operation manual X⁄-1.233600307 X¤ 0.216800153 +1.043018296i, Example

Chapter 5: Equation Solvers

Example 2

5x3 + 4x2 +3x + 7 = 0 → x = ?

1.Press b 3 3 to select CUBIC of the EQN mode.

a=z	0.
b=	0.
c=	0.

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.

X⁄–1.233600307 X¤ 0.216800153 +1.043018296i

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