对于正数x规定f(x)=x/1+x,例如:f(3)=3/1+3=3/4; f(1/3)=1/31+1/3=1/4.请你计算:f(1/2012)+f(1/2011)+f(1/2010)+…+f(1/3)+f(1/2)+f(1)+f(2)+f(
问题描述:
对于正数x规定f(x)=
,例如:f(3)=x 1+x
=3 1+3
; f(3 4
)=1 3
=
1 3 1+
1 3
.请你计算:f(1 4
)+f(1 2012
)+f(1 2011
)+…+f(1 2010
)+f(1 3
)+f(1)+f(2)+f(3)+…+f(2010)+f(2011)+f(2012)=______. 1 2
答
原式=
+1 2013
+…+1 2012
+1 3
+1 2
+…+2 3
2012 2013
=(
+1 2013
)+(2012 2013
+1 2012
)+…+2011 2012
1 2
=2011×1+
1 2
=2011
.1 2