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Question: why maple return RootOf answer and the allvalues again can't show the answers

Question:why maple return RootOf answer and the allvalues again can't show the answers

mkhojaste 5 Maple 15
April 21 2013
1

i'm trying to solve this parametric parametequation(a1,a2 & l are parameters and n is my variable): 

a2*(l^(2*n)-1)-2*(a1+n*a2)*(l^n)*log(l)=0

when i try to solve this parametric equation, maple return a RootOf term and when i try to see the values of this RootOf by Allvalues, again return a RootOf, but when i replace the parameters by numbers(like a1=400, a2=25 & l=3.2), maple return a unique n. 

for my problem, i need to have the parametric value of n based on the solvation of above equation, thus i'm completely confused.is there any way to have the parametric value of n based on a1, a2 and l?

thanks for your helps. 
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