(1-1/2²)(1-1/3²)……(1-1/2013²)=(1-1/2)(1+1/2)(1-1/3)(1+1/3)……(1-1/2013)(1+1/2013)=1/2×3/2×2/3×4/3×……×2012/2013×2014/2013=1/2×2014/2013=1007/2013很高兴为您解答,【学习宝典】团...