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If tr=2^(r/3)+2^(-r/3), then sum(r=1)^10...

If `t_r=2^(r/3)+2^(-r/3), then sum_(r=1)^100 t_r^3 -3 sum_(r=1)^100t_r+1=` (A) `(2^101+1)/2^100` (B) `(2^101-1)/2^100` (C) `(2^201+1)/2^100` (D) none of these

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