@acer Thank you for the best explanation I have ever seen about the issue of using "unevaluated" quotes.  The Maple folks who write the Help pages should take a good look at your reponse here and "re-tool" the help pages on this topic for a better explanation.  I have never really understood the Maple help page on two point BVPs example because of the quotes issue.  Acer, you not only deserve a "thumbs-up" but a GOLD STAR!!

P.S. Are you a college math professor somehere?

@AHSAN I admire your patience to write such a gigantic equation! What are you computing with this monster equation?

For that you need the really "Big" guns, such as Acer or dharr or a Carl Love to help you there.

Yes, your worksheet shows the same plot as I got when I corrected exp(k*p) issue and the "local D" issue.

Just as a aside, you include the package "linalg" which has been "deprecated" and it is not recommended by

the "Big" guns; you should use "LinearAlgebra" instead.

You should use "exp(k*p)" instead of plain old "e".  Also, you have several "D" and that should be made local.  I got a plot after fixing those syntax errors but I can't tell you if it is right!

@mmcdara Thank you all for your great insight!