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Question: why this equation cant be solved and what is the explanation of the error

Question:why this equation cant be solved and what is the explanation of the error

georgepan 15
September 12 2014
0

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?
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