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15–31
File name 33s-English-Manual-040130-Publication(Edition 2).doc Page : 388
Printed Date : 2004/1/30 Size : 13.7 x 21.2 cm
Example 2:
Find the roots of 4x
4
– 8x
3
– 13x
2
– 10x + 22 = 0. Because the coefficient of the
highest–order term must be 1, divide that coefficient into each of the other
coefficients.
Keys:
(In RPN mode)
Display: Description:
t
P
value
Starts the polynomial root finder;
prompts for order.
4
¥
value
Stores 4 in F; prompts for D.
8
z
Ï
4
¯
¥
value
Stores –8/4 in
D; prompts for C.
13
z
Ï
4
¯
¥
value
Stores –13/4 in
C. prompts for B.
10
z
Ï
4
¯
¥
value
Stores –10/4 in
B; prompts for A.
22
Ï
4
¯
¥
Stores 22/4 in A; calculates the
first root.
¥
Calculates the second root.
¥
Displays the real part of the third
root.
¥
Displays the imaginary part of the
third root.
¥
Displays the real part of the fourth
root.
¥
Displays the ima
g
inary part of the
fourth root.
The third and fourth roots are –1.00 ± 1.00
i.