Date: Jul 6, 2013 8:12 PM
Author: Albert D. Rich
Subject: Re: Charlwood Fifty test results
On Saturday, July 6, 2013 11:53:22 AM UTC-10, Nasser M. Abbasi wrote:

> On 7/6/2013 3:32 PM, Albert Rich wrote:

>> On problem 10, I entered the integrand as

>>

>> x^3*exp(1)^arcsin(x)/sqrt(1-x^2)

>>

>> whereas he probably entered it as

>>

>> x^3*exp(arcsin(x))/sqrt(1-x^2)

>>

>> Because of some bazaar quirk in Maple, it succeeds in integrating the former and not the latter!

>

> That is interesting. I wonder how you discovered this. It would

> never have occurred to me to try that.

It would never have occurred to me either. But the program I wrote that translates the problems from Mathematica to Maple syntax, translates expressions of the form E^z to exp(1)^z. This is because for some inexplicable reason Maple does not define a constant for the base of the natural logarithms, but does for the imaginary unit and pi. Go figure...

Albert