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[Axiom-developer] [Axiom-mail] How can I get every term of an expression
[Axiom-developer] [Axiom-mail] How can I get every term of an expression ?
Sun, 18 Sep 2005 15:37:53 -0500
I start from a Polynomial Integer : (2*x+3*y)*(4*z+2*x)
or better from an Expression : (2*log(x)+3*exp(y))*(4*sin(z)+2*log(x))
And I want to get every term : 6 xy, 8 xz, 12 yz and 4 x^2
or 6 %e^y log(x), etc.
and get easily the integer 6, 8, 12 or 4.
With mupad I do
[op (normal ((2*x+3*y)*(4*z+2*x)))] ;
map ([op (normal ((2*x+3*y)*(4*z+2*x)))], t-> [coeff(t), t/coeff(t)]) ;
The first give me the list [6 x y, 8 x z, 12 y z, 4 x^2]
and the second [[6, x y], [8, x z], [12, y z], [4, x ]]
Of corse the command t/coeff(t) isn't the faster way,
but I don't find better.
How can I do this in an *.input axiom file ?
I look in the big book, I believe I must use DMP, not SUP, but I'm not sure.
Must I use leadingCoefficient, leadingCoefficient and reductum
or can I use a List coerce ? but I don't find the command.
And I want to play with expression, not polynomial ;
then what coerce must I do ?
Thanks a lot for any advice, and have a good day !
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