Casio fx9750GII - OTHER ICONS (Continued); Equations Mode: Polynomial cont. and Other Types

OTHER ICONS
Solving Polynomial Equations cont.
Solving Other Types of Equations
Example 2
Solve 2x
2
+ 4x − 5 = 0 Result
Enter the coefcients of the equation
2 EXE 4 EXE - 5 EXE
then
F1
or
EXE
to solve the equations
Example 3
Solve x
2
+ 2x + 4 = 0 Result
Change the format of complex mode
SHIFT MENU
F2 EXIT
Enter the coefcients of the equation
2 EXE 4 EXE - 5 EXE
then
F1
or
EXE
to solve the equations
A cubic equation: ax
3
+ bx
2
+ cx + d = 0.
A quartic equation format: ax
4
+ bx
3
+ cx
2
+ dx + e = 0.
A quintic equation format: ax
5
+ bx
4
+ cx
3
+ dx
2
+ ex + f = 0, etc.
For solving the appropriate degree polynomial, enter the appropriate degree via the Function key and then enter the
coefcients of each equation and solve.
Note:
In solving the polynomial equations the solutions can be displayed in
polar and rectangular format if the solutions are complex.
Note:
The following error message is due to incorrect mode settings.
Use SETUP and then scroll down to change the settings, as required
by pressing the appropriate Function key(s).
KEY
KEY
SOLVer
Using the Solver tool type
in the equation without
rearranging and solve
using [F6] or [EXE].
Using the Solver in
EQUAtion mode:
Enter in the equation.
You are ‘greeted’ with the screen shown above. This is where you enter in the equation and
solve the equation with the information about the ‘known’ variable values and solve for the
‘unknown’ variable.
cont. on next page