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sta_fir=Fa+F0-sum(sta_Kn.*deltan.^(1.5).*sina);
sta_sec=Fr-sum(sta_Kn.*deltan.^(1.5).*(cos(phai)).*cosa);
sta_thir=M-dm/2*sum(sta_Kn.*deltan.^(1.5).*cos(phai).*sina);
static=[sta_fir;sta_sec;sta_thir];
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findsym(static);
findsym(sina);
[gen,n]=Newtonraphson(static,x0);
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