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Topic: factoring over the complex rationals
Replies: 1   Last Post: Nov 9, 2009 7:42 AM

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clicliclic@freenet.de

Posts: 381
Registered: 4/26/08
factoring over the complex rationals
Posted: Nov 9, 2009 7:39 AM
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Hello,

the Computer Algebra system Derive cannot factor polynomials over the
complex rational numbers. Can the other systems regularly featured on
sci.math.symbolic do this? Can they decompose

-7*x^6 + 10*x^4 + 24*x^3 - 14*x^2 - 27*x - 42 +
#i*(3*x^6 - 9*x^5 + 30*x^4 + 15*x^3 + 17*x^2 - 33*x - 7)

for example? Can the complex problem perhaps be reduced to the real
problem? If so how? This might allow teaching Derive to handle the
complex case too.

Martin.

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