Question: Error: " cannot determine if this expression is true or false "

I'm trying to execute the linked code but i am having the following error:

Error, (in sombrea2) cannot determine if this expression is true or false: -(1/4)*105^(1/2) <= (1/4)*105^(1/2)
 

The entire procedure is downloadable here: http://www.mediafire.com/file/llcfhydpjy8tken/maple17.mw/file

If someone can help me to find a solution I'll be very thankful.

Please Wait...