– E-30 –
QUADRATIC AND CUBIC EQUATION SOLVERS
Quadratic (ax
2
+ bx + c = 0) or cubic (ax
3
+ bx
2
+ cx + d = 0)
equation may be solved using this function.
Q Quadratic equation solver: m22
W Cubic equation solver: m23
• Press ® after entering each coefficient.
• The result will be displayed by pressing ® after entering
all coefficients. When there are more than 2 results, the next
solution will be displayed.
• When the result is an imaginary number, “xy” symbol will
appear. The display can be switched between imaginary and
real parts by pressing @≠.
• The results obtained by this function may include a margin of
error.
m22
3x
2
+ 4x – 95 = 0 3 ® 4 ®± 95
x1 = ? ®
5.
x2 = ? ®
–6.333333333
@®
5.
m23
5x
3
+4x
2
+3x +7=0 5 ® 4 ® 3 ® 7
x1 = ? ®
–1.233600307
i
x2 = ? ®
0.216800153
i
@≠
+
1.043018296
i
x3 = ? ®
0.216800153
i
@≠
–
1.043018296
i
COMPLEX NUMBER CALCULATIONS
To carry out addition, subtraction, multiplication, and division
using complex numbers, press m3 to select the complex
number mode.
Results of complex number calculations are expressed in two modes:
Q @}: Rectangular coordinate mode (xy appears.)
W @{: Polar coordinate mode (
r
θ
appears.)
Complex number entry
Q Rectangular coordinates
x-coordinate
+
y-coordinate
Ü
or
x-coordinate
+ Ü
y-coordinate
W Polar coordinates
r
Ö
θ
r: absolute value θ: argument
EL5060E_En0616.pm65 06/16/2004, 13:1030
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