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5.41*arctan(((0.03/n)+n*sin(8.87*n))/(294.4*n*(n^2-1)+(n^2+1)*cos(8.87*n)))-2=0
5.41*arctan(((0.03/n)+n*sin(8.87*n))/(294.4*n*(n^2-1)+(n^2+1)*cos(8.87*n)))-2=0
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