Thanks for adding your observations, from which I replayed the first. When asking Maple question that are too difficult for it to solve, I'd prefer to get error messages instead of incorrect results without any clue that they might be wrong. I agree that one cannot use Maple blindly. On the other hand, we should not be required to do a complete technical analysis of the underlying software to make use of Maple. I hope there will be some progress in this issue.

Thanks for adding your observations, from which I replayed the first. When asking Maple question that are too difficult for it to solve, I'd prefer to get error messages instead of incorrect results without any clue that they might be wrong. I agree that one cannot use Maple blindly. On the other hand, we should not be required to do a complete technical analysis of the underlying software to make use of Maple. I hope there will be some progress in this issue.