您好:
一、(1-1/2²)(1-1/3²)(1-1/4²)……(1-1/99²)(1-1/100²)
=(1-1/2)(1+1/2)(1-1/3)(1+1/3)。。。(1-1/100)(1+1/100)
=1/2x3/2x2/3x...x99/100x101/100
=1/2x101/100
=101/200
二、(1+1/2)(1+1/2²)(1+1/2⁴)(1+2^8)+1/2^15
=2*(1-1/2)、(1+1/2)(1+1/2²)(1+1/2⁴)(1+2^8)+1/2^15
=2*(1-1/2²)(1+1/2²)(1+1/2⁴)(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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