On Fri, Oct 30, 2009 at 12:23 AM, ma...@mendelu.cz <ma...@mendelu.cz> wrote:
>
> Hello all
>
> The latex representation of numbers in scientific notation works as
> excepted, unless we have these numbers as results from numerical
> integral. Compare the last two outputs i nthe session below. Why is
>
> sage: latex(A[1])
> 1.66533453694e-14
>
> and not
>
> sage: latex(A[1])
> 1.66533453694 \times 10^{-14}
>
> ?
It's because one is a Python float and one is a Sage real number:
sage: latex(1.5e-20)
1.50000000000000 \times 10^{-20}
sage: latex(float(1.5e-20))
1.5e-20
sage: type(1.5e-20)
<type 'sage.rings.real_mpfr.RealLiteral'>
You can get around this as follows:
sage: A=integral_numerical(x,2,1)
sage: latex(RR(A[1]))
1.66533453693773 \times 10^{-14}
Obviously, it would be nice if the latex command were improved so it
is aware of Python floats. That would be a nice enhancement you
can contribute to sage.
-- William
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