用规律计算:(-1×1/2)+(-1/2×1/3)+(-1/3×1/4)+(-1/2007×1/2008)快点啊等着呢、快的还有分
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/04 04:32:44
![用规律计算:(-1×1/2)+(-1/2×1/3)+(-1/3×1/4)+(-1/2007×1/2008)快点啊等着呢、快的还有分](/uploads/image/z/7139851-43-1.jpg?t=%E7%94%A8%E8%A7%84%E5%BE%8B%E8%AE%A1%E7%AE%97%EF%BC%9A%28-1%C3%971%2F2%29%2B%28-1%2F2%C3%971%2F3%EF%BC%89%2B%EF%BC%88-1%2F3%C3%971%2F4%EF%BC%89%2B%EF%BC%88-1%2F2007%C3%971%2F2008%EF%BC%89%E5%BF%AB%E7%82%B9%E5%95%8A%E7%AD%89%E7%9D%80%E5%91%A2%E3%80%81%E5%BF%AB%E7%9A%84%E8%BF%98%E6%9C%89%E5%88%86)
x){>eŋ-OuX5<hI*ҧX_`g3pަ
@6P5H6~!zA0>H"_\g
"P
用规律计算:(-1×1/2)+(-1/2×1/3)+(-1/3×1/4)+(-1/2007×1/2008)快点啊等着呢、快的还有分
用规律计算:(-1×1/2)+(-1/2×1/3)+(-1/3×1/4)+(-1/2007×1/2008)快点啊
等着呢、快的还有分
用规律计算:(-1×1/2)+(-1/2×1/3)+(-1/3×1/4)+(-1/2007×1/2008)快点啊等着呢、快的还有分
(-1×1/2)+(-1/2×1/3)+(-1/3×1/4)+(-1/2007×1/2008)
= 1/2-1+1/3-1/2+1/4-1/3+……+1/2008-1/2007
= -1+1/2008
= -2007/2008