Casio FX-9750GII-SC User Guide - Page 105
Example, To solve the cubic equation Angle unit = Rad
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Page 105 highlights
• To change the value of a coefficient that you already stored by pressing U, move the cursor to the coefficient you want to edit. Next, input the value you want to change to. • Pressing (CLR) clears all coefficients to zero. 4. Solve the equations. Example To solve the cubic equation (Angle unit = Rad) x3 - 2x2 - x + 2 = 0 K EQUA (POLY) (3) @U AU @UAU (SOLV) Multiple Solutions (Example: x3 + 3x2 + 3x + 1 = 0) Complex Number Solution (Example: x3 + 2x2 + 3x + 2 = 0) Complex Mode: Real (page 1-27) Complex Mode: a + bi Complex Mode: rQ • Internal calculations are performed using a 15-digit mantissa, but results are displayed using a 10-digit mantissa and a 2-digit exponent. • It may take considerable time for the calculation result of a high-order equation of 3rd degree or higher to appear on the display. • An error occurs if the calculator is unable to find a solution. • High-order equation calculations may not produce accurate results when the equation has multiple solutions. • After calculation is complete, you can press (REPT), change coefficient values, and then re-calculate. 4-3