On http://sagemath.org/doc/html/ref/module-sage.calculus.calculus.html one
can read:
sage: var('x, u, v')
(x, u, v)
sage: f = expand((2*u*v^2-v^2-4*u^3)^2 * (-u)^3 * (x-sin(x))^3) # not
tested -- trac #946
This seems to work now:
sage: var('x, u, v')
sage: f = expand((2*u*v^2-v^2-4*u^3)^2 * (-u)^3 * (x-sin(x))^3)
sage: f.factor()
u^3*(2*u*v^2 - v^2 - 4*u^3)^2*(sin(x) - x)^3
Paul
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