Improper integral

[parisse]

(06-13-2014 08:29 AM)Maro Wrote:  any idea from HP when such things will be fixed in the Prime?

I have no idea, and even if I had, it's not difficult to imagine that I could not talk publicly about :-)

Quote:As long as other calculators are needed in parallel to check reliability of results, working with the Prime is quite unsatisfactory …

Well, here at least, you get a warning that numeric and exact integration do not match. You don't need another calculator to find the right answer, just a little reflexion. If numeric and exact answers don't match, it's most probably the exact answer that will be wrong (especially if you are using HP-specific functions like NTHROOT because other functions have probably been tested by Xcas users). The numeric integrator is more robust, but may fail if there are singular points on the integration domain.