@Carl Love I knew it had to be something simple. Your explanation is very good!

@Carl Love Yes, I realized that after I posted the question.

@Markiyan Hirnyk This works too, thanks!

@Carl Love This is just what I need. Thanks!

@nm Hence my question. My point is, that answer is not correct. Why is Maple not giving the correct answer?

@spradlig Despite it's convenience, be wary of RealDomain. See http://www.mapleprimes.com/questions/131296-Discrepancy-With-Limit

@spradlig Despite it's convenience, be wary of RealDomain. See http://www.mapleprimes.com/questions/131296-Discrepancy-With-Limit

@Carl Love 

Yes, you are correct. I simply copied and pasted the command from the original question and added explicit. I wouldn't have constructed the command in that manner. :-)

@Carl Love 

Yes, you are correct. I simply copied and pasted the command from the original question and added explicit. I wouldn't have constructed the command in that manner. :-)

Yes, I was able to get the value of 26Pi by manually converting it to cylindrical coordinates. I was wondering if there is a way to prod Maple to do the conversion on its own.

Yes, I was able to get the value of 26Pi by manually converting it to cylindrical coordinates. I was wondering if there is a way to prod Maple to do the conversion on its own.

It does help, thanks!

It does help, thanks!

i use the 'explicit' option in various solvers, but never solve(). Thanks for the very detailed response.

i use the 'explicit' option in various solvers, but never solve(). Thanks for the very detailed response.