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Bairstow method
ġؼ

1.Bairstow method

P(x) DZٰ ϴ ϴ

Ÿ Ѵ.
( , )
p(x) = a0xn + a1xn-1++ an-xx +an (1)
,(,a0 0)̶ ϰ,
p(x) 2 x2-rx-s
p(x)=(x2-rx-s)Q(x)+u(x-r)+v (2)
⼭ Q(x) n-2 ׽̰,
u(x-r)+v p(x) x2-rx-s ̴.
̶,
Q(x)=bnxn-2+bn-xxn-3+.+b4x2+b3x+b2 ̶ ϰ,
(2) Ͽ Ϲȭѽ (3)̶ ϰ, ̶ Q(x) bk ׽(1) (2) xk Ͽ ´.
̷ ...
/
Bairstow method
ġؼ
1.Bairstow method
P(x) DZٰ ϴ ϴ

Ÿ Ѵ.
( , )
p(x) = a0xn + a1xn-1++ an-xx +an (1)
,(,a0 0)̶ ϰ,
p(x) 2 x2-rx-s
p(x)=(x2-rx-s)Q(x)+u(x-r)+v (2)
⼭ Q(x) n-2 ׽̰,
u(x-r)+v p(x) x2-rx-s ̴.
̶,
Q(x)=bnxn-2+bn-xxn-3+.+b4x2+b3x+b2 ̶ ϰ,


(2) Ͽ Ϲȭѽ (3)̶ ϰ, ̶ Q(x) bk ׽(1) (2) xk Ͽ ´.
̷ ȭ ̿Ͽ ظ ϴ bairstow method Ѵ.

.

ᱹ Ѵ.
To find the couple roots of a poly
find the guadratic factors.
find the zero of the guadratic factor
by why guadratic factor formal.
2. Matlab ̿
3.8 f(x)=x3+3x2+5x-1 DZ ٻ 0.1795090246̡()


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ID : tjff******
Regist : 2013-04-29
Update : 2013-04-29
FileNo : 11067693

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Bairstowmethod  


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