Cubic Equations - Casio fx-570es User Manual

11
Casio FX-570ES One Page Exercise:

CUBIC EQUATIONS

3 2
>>> Solve the cubic equation of
.
3 x − 16 x + 55 x − 52 = 0
What To Do The Screen Display
First turn on the calculator, select "EQN" mode and choose to solve for cubic equation.
W
w 5 4
Enter the coefficients and then solve the equation.
3 p z 1 6 p 5 5 p z
5 2 p
p
To see the rest of the solutions press "=" a couple of times.
p
p
The complex solutions can be displayed in polar form as follow.
q w R 3
2
View the other solutions using the up down arrow keys. You can return to the form at set up.
a + ib
R E
q w R 3 1
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