
Re: To all my amazingly (clever/stupid) (stingy/generous) (gifted/pitiable) critics
Posted:
Jul 16, 2007 1:07 AM


On Jul 15, 12:55 pm, Thomas Madden <thomas.mad...@sbcglobal.net> wrote: > On 7/15/07 4:02 AM, in article > 1184497336.168368.166...@22g2000hsm.googlegroups.com, "JB" > > <wjb...@yahoo.com> wrote: > > [snip] > > > > > The cas world has expanded > > greatly in the last few years and now is the time to consolidate > > those gains with quality improvements. > > The problem isn't the quality of the software. The problem is that > there is no way to idiot proof the software for users like you. > > Here is a nice example of JB identifying a "bug." > > > JB wrote: > > How can Maple solve int(sin(z)*sin(z^3+z),z=0..infinity); > > but not int(sin(z)*sin(z^3+z), z); ? > >>Christopher Creutzig replies: > >> The obvious possibilities include (in decreasing order of likelihood) > >>pattern matching, convolution, and change of variables. > >JB replies: > >Huh? It is necessary to work out the integration i.e., > >int(sin(z)*sin(z^3+z), z) before evaluating the limits as in > >int(sin(z)*sin(z^3+z),z=0..infinity); Sounds like some sort of > >convoluted bug to me. > > I feel for the Maplesoft rep who got stuck in the phone with JB trying to > with explain that one. And yet he has the audacity to accuse others of > wasting the developers time. > > Maybe you should pick up a math text and learn something instead of ranting > and raving all day about things you know nothing about.
In particular, JB should check out the evaluation of the integral of e^(x^2) from infinity to +infinity (which should be in any Calculus III book) despite the fact that e^(x^2) has no nice antiderivative.
 Christopher Heckman

