why when maple cant solve the following?

Hello

I have done this question again but i didnt get an answer.So does anyone know how i can substitute the following variables to an equation?I tried to create a list but i dont know how the variables can be substituted in the right place.data.docxdata.docxalfaeq.mw

Thanks

teliko.mwMapl_doc.docxHello,

After I have substitute all the variables by hand ,maple still continious  processing(27 hours and still evaluating)for a simple

summarisation by the time that live math2 needed only 2 mins.Have i done something wrong?I want to solve the following equation which is shown in the attached file with the experimental data

Dear all

I want your help in a problem.I want to substitute in a summarization ,the variables for Vi and ξi.Because the number of variables are more than 200 I want to know if there is a way to take them from the excel sheet and put the to my program.attached are the maple worksheet and the variables table

P.s. i have done it for 44 variables

i have the following equation:

1.003225155^(l)-((∫)[0]^1[((((0.6 r^2+1)^1.813666667)/((0.375 r^2+1)^2.666666667))^())^(l)r ⅆr)=0

and throws me the error:

Error, Got internal error in unknown : "invalid input: lhs received sattr, which is not valid for its 1st argument, expr"

do  you know the meaning of the error and why this equation cant be solved for l?