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discrete equation which has initial value with periodic boundary condition(please help)

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semiha
semiha 2014-12-23
关闭： MATLAB Answer Bot 2021-8-20
hello i have a equation
i (dc/dt) = -(cn+1 +cn-1)+ lcnl^2 cn (n subtitle) if i divide it into 200 part c201=c1
initial value is something like that c(x,0)=1-(4/ 1+x^2);
i tried to solve this problem with cranck-nicolson method but it failed. Is there something different method or special numerically solver technique? Thanks for your help...

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