(1)(-1001)*(-2/7)*(-4/13)*(-1/11)*(-1001*-2/7*-4/13*-0.125)^6
=8*(1.375)^6
(2)1998*(1+1999+1999*1999+1999^3+1999^4+……+1999^1998)
=1998*(1-1999^1999)/(1-1999)=1999^1999-1
(3)由Sn=(a1-an*q)/1-q
所以S=(3^2013 -1)/2
(4)1*2014*(1/2+1/4+1/8+1/2^4+……+1/2^2013)
=2014*(1/2-1/2014)/(1-1/2)=2012-2=2010