Casio CFX-9850G PLUS Calculations Manual - Page 6

Browse online or download pdf Calculations Manual for Calculator Casio CFX-9850G PLUS. Casio CFX-9850G PLUS 13 pages. 6. matrix calculations
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Casio CFX-9850G PLUS Calculations Manual

7-3 Quadratic and Cubic Equations

This calculator can also solve quadratic and cubic equations that match the
following formats (when
k k k k k Specifying the Degree of an Equation
While in the Equation Mode, press 2 (POLY) and then specify the degree of the
equation.
k k k k k Solving a Quadratic or Cubic Equation
1. Press 2 (3) to enter the Cubic Equation Mode.
2. Input each coefficient.
3. After inputting the coefficients, press 1 (SOLV) to solve the equations.
104
ax
bx
2
• Quadratic:
+
ax
bx
• Cubic:
3
+
• {2}/{3} ... {quadratic}/{cubic} equation
Example
To solve the following cubic equation:
x
x
3
– 2
bw-cw-bwcw
• Each time you press w, the input value is registered in the highlighted cell.
Each press of w inputs values in the following sequence:
→ coefficient
a
coefficient
Input for coefficient
• You can input fractions and value memory contents as coefficients.
a
0):
G G G G G
c
+
= 0
cx
d
2
+
+
= 0
x
2
–
+ 2 = 0
→ coefficient
b
d
is required only for cubic equations.
→ coefficient
c
d
Highlighted solution cell value