Casio fx9750GII - OTHER ICONS (Continued); Equations Mode: Simultaneous and Polynomial

fx9750GII
CHAPTER 6 | PG 47
Simultaneous Equations 2 Equations–2 Unknowns TO 6 Equations–6 Unknowns
The calculator can solve simultaneous linear equations up to 6 unknowns, any other linear equation systems > 6
unknowns should be solved in the RUN-MAT icon from the MAIN MENU using matrices.
The calculator can solve systems of equations in the form:
ax + by = c
dx + ey = f
Solving Polynomial Equations
The calculator can solve quadratic and cubic
equations and other polynomials up to degree 6, any
other polynomials of degree > 6 should be solved in
the GRAPH icon from the MAIN MENU.
A quadratic equation: ax
2
+ bx + c = 0.
For solving 2 simultaneous equations - 6 simultaneous equations enter the appropriate number of unknowns via the
Function key and then enter the coefcients of each equation and solve.
KEY
then
KEY
then
Equations cont.
Example
Solve 2x + 3y = 7
3x – 4y = 2
Result
Enter the coefcients of the equation
2 EXE 3 EXE 7 EXE
3 EXE - 4 EXE 2 EXE
then
F1
or
EXE
to solve the equation
Example
Solve x
2
− 3x + 2 = 0 Result
Enter the coefcients of the equation
1 EXE - 3 EXE 2 EXE
then
F1
or
EXE
to solve the equations
cont. on next page