On Dec 4, 3:07 pm, "William Stein" <[EMAIL PROTECTED]> wrote:
> Do you think it would be better if instead of
>
> sage: print integrate(integrate(f,y,x^3,x^0.5),y,0,1)
> ... Is  x  positive or negative?
>
> one saw:
> ... Is  x  positive or negative?  (Try using the assume command.)

I think the latter is more intuitive; in fact, I would go as far as to
do something like this:

  ... Is x positive or negative? (Try the assume(x>0) command before
  integral evaluation)

Thanks,

- vijay
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