作业帮1/2x4+1/4x6+1/6x8+.+1/2010x2012
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/28 02:12:40
xO10 ʍ&rCG< U ؎e'Jɓ`(u`a q1C9w6 cl rB)TUsΎGIUmj_ h_T3@=
1/2x4+1/4x6+1/6x8+.+1/2010x2012
1/2x4+1/4x6+1/6x8+.+1/2010x2012
1/2x4+1/4x6+1/6x8+.+1/2010x2012
1/2x4+1/4x6+1/6x8+.+1/2010x2012
=1/2[(1/2-1/4)+(1/4-1/6)+(1/6-1/8)...+[1/2010-1/2012]
=1/2*(1/2-1/2012)
=1/2*1005/2012
=1005/4024