Ask Your Question
0

bezout coefficients ?

asked 2015-05-27 12:06:55 -0500

hashirama gravatar image

I want to find the bezout coefficient for those 2 polynomials :

$f = 1+x-x^2-x^4+x^5$ and $g = -1+x^2+x^3-x^6$ when I use the gcd function in sage the output is :

sage: gcd(f,g)
sage: 1

but when I use xgcd(f,g) it gives me the following :

($-27$, $9x^5 - 18x^2 - 9x - 9$, $9x^4 - 9x^3 - 18x + 18$)

I want xgcd to give me 1 instead of -27 so the polynomials will be the bezout coefficients

P.S: I can't divide the polynomials by -27 because i'm working in ZZ

edit retag flag offensive close merge delete

Comments

kcrisman gravatar imagekcrisman ( 2015-05-27 16:10:57 -0500 )edit

thank you !

hashirama gravatar imagehashirama ( 2015-05-27 18:34:33 -0500 )edit

1 answer

Sort by » oldest newest most voted
0

answered 2015-05-27 13:35:10 -0500

FrédéricC gravatar image

Please read the documentation

f.xgcd?
edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Question Tools

Stats

Asked: 2015-05-27 12:06:55 -0500

Seen: 660 times

Last updated: May 27 '15