1 ACCEPTED SOLUTION
Accepted Solutions
Beginning with Mathcad 14 the symbolic engine was changed. In older versions its was Maple but now its muPad. Many people consider Maple being more efficient and capable. Anyhow, thats the reason the integral in the old file you posted does not evaluate as it should and as it is shown in the pdf of that file. The "assume" does not work as shown in the sheet, you would first have to clear those four variables for symbolic evaluation and then put the assume ine the symbolic eval - but unfortunately even then muPad does not find a solution for the integral.
Concerning your file and the integral in your formula 1. When I simplify the integrand I get
The denominator in the range of exp(E*10^19) gets really big for positive values of E. Mathcads symbolic interprets it a infinity and yields 0.0 as result, while the numeric fails for values greater than 10^307.
You may consider to chekc and rewrite your formula.
Concerning the result with formula 2, you misinterpreted the symbolics result. 1.23e4 is mupads way to say 1.23*10^4, no reference to Eulers constant.
You do not need tpo retype the symbolcs result - you may either assign ito a variable wich you can evaluate numerically or use inline evaluation.
When I google for Planck & Mathcad I get a lot of findings. Maybe this random pick (also old and from Maple times, I didn't bother to retype) is of help
Beginning with Mathcad 14 the symbolic engine was changed. In older versions its was Maple but now its muPad. Many people consider Maple being more efficient and capable. Anyhow, thats the reason the integral in the old file you posted does not evaluate as it should and as it is shown in the pdf of that file. The "assume" does not work as shown in the sheet, you would first have to clear those four variables for symbolic evaluation and then put the assume ine the symbolic eval - but unfortunately even then muPad does not find a solution for the integral.
Concerning your file and the integral in your formula 1. When I simplify the integrand I get
The denominator in the range of exp(E*10^19) gets really big for positive values of E. Mathcads symbolic interprets it a infinity and yields 0.0 as result, while the numeric fails for values greater than 10^307.
You may consider to chekc and rewrite your formula.
Concerning the result with formula 2, you misinterpreted the symbolics result. 1.23e4 is mupads way to say 1.23*10^4, no reference to Eulers constant.
You do not need tpo retype the symbolcs result - you may either assign ito a variable wich you can evaluate numerically or use inline evaluation.
When I google for Planck & Mathcad I get a lot of findings. Maybe this random pick (also old and from Maple times, I didn't bother to retype) is of help
Does anyone know if there is a limit for the number of pictures you are allowed to insert in a posting? Whatever I try in the above reply, the fourth pic is shown correctly first but when I send/update, all I get is a non working link!
I'll try it again here:
Werner Exinger wrote:
... muPad does not find a solution for the integral.
Mathcad sometimes needs a little help with symbolic integrals:
Alan
