Hello



>>>>> "Jaime" == Jaime Villate <villate at fe.up.pt> writes:

    Jaime> On 12/10/2012 04:51 AM, Raymond Toy wrote:


    Jaime> But still, unless the original coefficients are truly exact values, I
    Jaime> don't see the point of computing the integral to 300+ digits.  Seems
    Jaime> like it would be just random noise.

    Jaime> Also, I think a little bit of analysis as done here goes a long way to
    Jaime> simplify the problem.  You now have some insight into what the function
    Jaime> looks like for various limits of integration.


    Jaime> Very interesting analysis. Thanks Ray.

No problem.  Kind of fun to put that code to some practical use,
especially since it seems to have produced the correct answer. :-)

    Jaime> From what the user told us in another message it seems that
    Jaime> those three parameters are some sort of cosmological
    Jaime> constants so those quoted values must definitely have
    Jaime> uncertainties; with your result he can now explore the
    Jaime> differences as he changes parameters. For instance, the
    Jaime> last parameter, .728, might actually be in the interval
    Jaime> from .727 to .729.  By the way, what's the meaning of that
    Jaime> third term? (0*(1+x)^2) ?  Could it be a typo in the
    Jaime> original message?

I just copied the original, but as explained, it just another constant
that happens to be 0 for this example.

While a non-zero value will certainly change the final answer, the
basic work remains the same since the integrand is still the square
root of a quartic.

Ray