In Maple 15, evalhf is not needed for polynomials, but it is needed for sin and sqrt. In particular, in the example that I did (I don't repeat the code since it can be just copied from there.)
-0.701281994102444 - sin(0.777194230546894 2 + 1)
give the same value as in the NLPSolve answer, while evalhf does,
I don't think that you are being rude in the posts in this thread. I think that you are being patronizing, which is, probably, understandable (but would be more understandable if I knew who you are.) Also, I think that initially the post reording might gave you a wrong idea in the consequence in which all those messages were made.
Certainly, you have all my respect and I hope I didn't post anything that might look rude, too.
Thank you for good words about me,