
(1+1/2)(1+1/2²)(1+1/2³)(1+1/2的四次幂)(1+1/ 2的八次幂)+1/2的15次幂
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(1+1/2)(1+1/2²)(1+1/2³)(1+1/2的四次幂)(1+1/ 2的八次幂)+1/2的15次幂
=2(1-1/2)(1+1/2)(1+1/2^2)(1+1/2^4)(1+1/2^8)+1/2^15
=2*(1-1/2^16)+1/2^15
=2-1/2^15+1/2^15
=2
=2(1-1/2)(1+1/2)(1+1/2^2)(1+1/2^4)(1+1/2^8)+1/2^15
=2*(1-1/2^16)+1/2^15
=2-1/2^15+1/2^15
=2
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