For instance, $f=x^2y^2+1$ is an element of $\mathbb{C}[x,y]$, I want to extract the coefficient of $x^2$, which is $y^2$. However "f.coefficient(x,2)" only works for symbolic expressions, are there similar functions for ring elements?
In Sage, how to extract coefficient of a polynomial in a ring
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math-software
sagemath
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0I don't know anything about Sage, but perhaps you could tell it to find $\dfrac{1}{2}\dfrac{\partial^2 f}{\partial x^2}(0,y)$? – 2012-06-30
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0By the way, there http://ask.sagemath.org/ for sage. In case you have more specific questions in the future. – 2012-06-30