(1+2分之1)(1+2的平方分之1)(1+2的四次方分之一)( 1+2的8次方分之1)+2的十五

次方分之一
2025-05-11 12:10:23
推荐回答(1个)
回答1:

(1+1/2)(1+1/2^2)(1+1/2^4)(1+1/2^8)+1/2^15
=2*1/2*(1+1/2)(1+1/2^2)(1+1/2^4)(1+1/2^8)+1/2^15
=2*(1-1/2)(1+1/2)(1+1/2^2)(1+1/2^4)(1+1/2^8)+1/2^15
=2*(1-1/2^2)(1+1/2^2)(1+1/2^4)(1+1/2^8)+1/2^15
=2*(1-1/2^4)(1+1/2^4)(1+1/2^8)+1/2^15
=2*(1-1/2^8)(1+1/2^8)+1/2^15
=2*(1-1/2^16)+1/2^15
=2-2*1/2^16+1/2^15
=2-1/2^15+1/2^15
=2