I am a beginner user of both Mathematica and webMathematica.I have developed simple application such as multiplying two user-defined numbers, dividing them etc.But when i moved on, I realised something;webMathematica could not possibly do this :-
As you can see I have four input variables.
and i have to use them in four different formulas.Fine;But when i want to store the result of the First Formula,webMathematica displays the unevaluated value instead of evaluating it.
$$D is 2
$$Ri is 3
$$Kr is 1
$$ri is 2
and the formula for page variable "b" is "($$D/2)-$$ri"
Whenever i use "b" anywhere i get "-1*2+2*0.5" instead of getting straightforward "-1".
Please clarify How to acheive the evaluated value of page variable "b".
P.S My Source File Is Included
When i use variable "b"
Attachment: PressureVessel.jsp, URL: http://mathematica.selfip.com:8080/webMathematica/PressureVessel.jsp,