首页 > 留学知识库

问题: 数学运算题

1/(2*4)+1/(4*6)+1/(6*8)+……+1/(2002*2004)的值是()
A.1001/4008 B.225/2004 C.225/1002 D.1/1002
请详解

解答:

原式=1/2(1/2-1/4)+1/2(1/4-1/6)+1/2(1/6-1/8)+……+1/2(1/2002-1/2004)
=1/2(1/2-1/2004)
=1/2*1001/2004
=1001/4008
答案为A