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[" For nothe "(x^(2))/(a^(2))-(y^(2))/(a^(2))=1" ,let "n" be the number of points on the plane through which "],[" vargents are drawn "],[[" (1) "x_(0)=1," then "e=sqrt(2)," (2) if "n>1," then "1sqrt(2)," (4) "n>=1,0" se "<=sqrt(2)]]

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