Casio FX-9750GII-SC User Guide - Page 104
High-order Equations from 2nd to 6th Degree
UPC - 079767186067
View all Casio FX-9750GII-SC manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 104 highlights
K EQUA (SIML) (3) CU@U AU @U @UEUBU@U DUCU@U FU (SOLV) • Internal calculations are performed using a 15-digit mantissa, but results are displayed using a 10-digit mantissa and a 2-digit exponent. • Simultaneous linear equations are solved by inverting the matrix containing the coefficients of the equations. For example, the following shows the solution (x, y, z) of a simultaneous linear equation with three unknowns. x a1 b1 c1 -1 d1 y = a2 b2 c2 d2 z a3 b3 c3 d3 Because of this, precision is reduced as the value of the determinant approaches zero. Also, simultaneous equations with three or more unknowns may take a very long time to solve. • An error occurs if the calculator is unable to find a solution. • After calculation is complete, you can press (REPT), change coefficient values, and then re-calculate. ... 2. High-order Equations from 2nd to 6th Degree Your calculator can be used to solve high-order equations from 2nd to 6th degree. • Quadratic Equation: ax2 + bx + c = 0 (a p 0) • Cubic Equation: ax3 + bx2 + cx + d = 0 (a p 0) • Quartic Equation: ax4 + bx3 + cx2 + dx + e = 0 (a p 0) 1. From the Main Menu, enter the EQUA mode. 2. Select the POLY (Polynomial) mode, and specify the degree of the equation. You can specify a degree 2 to 6. 3. Sequentially input the coefficients. • The cell that is currently selected for input is highlighted. Each time you input a coefficient, the highlighting shifts in the sequence: ambmcm... • You can also input fractions and values assigned to variables as coefficients. • You can cancel the value you are inputting for the current coefficient by pressing ) at any time before you press U to store the coefficient value. This returns to the coefficient to what it was before you input anything. You can then input another value if you want. 4-2