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12ttt...t.vuotras TRBOUR16. 1.4 4.7 7.101.11++-3.(2n +1) (2n+3)3(2n+3)GRE

Answer»

1/1.4+ 2/4.7+1/7.10+,+1/(3n-2)(3n+1)=n/(3n+1); n=1.4; 1/(3(1.4)-2)(3(-2)+1)=1/((3(1.4)-2)(3(1.4)+1)=1/(3.12)(-6+3)=1/(3.12)((-3)=1/(-9.36)



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