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Question: why fsolve doesn't work

Question:why fsolve doesn't work

golnaz 40 Maple 2021
fsolve
October 12 2022
0

Hi

I'd like to know that why in the attachment "fsolve" does not work?

How can I evaluate the value of "A" in my file?

Many thanks in advance

NULL

> 

restart:
> 

N := 60: L := 10: a := 2*10^(-12):
> 

eqn:=ns=1-((((N/A)+((A*L)^(L/(1-L))))^((1-L)/L))/(A*L))*(2+(a*exp((((N/A)+((A*L)^(L/(1-L)))))^(1/L)))/((A*L*(((N/A)+((A*L)^(L/(1-L))))^((L-1)/L)))+((a*exp((((N/A)+((A*L)^(L/(1-L)))))^(1/L)))))):
> 

seq(fsolve(eqn,A),ns=[0.9603,0.9647,0.9691]):
> 

 

NULL

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