1/3+1/5+...1/99=?chenkexin1006老师您好!这道题的原式是这样的:1/3+1/5+1/7+1/9+1/11+...1/99=?我看了您给出的答案:原式=1/(1+2)+1/(2+3)……1/(49+50) =1/1-1/2+1/2-1/3……+1/49-1/50 =1-1/50 =49/50 其中:=1/1-1/2+1/2-
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![1/3+1/5+...1/99=?chenkexin1006老师您好!这道题的原式是这样的:1/3+1/5+1/7+1/9+1/11+...1/99=?我看了您给出的答案:原式=1/(1+2)+1/(2+3)……1/(49+50) =1/1-1/2+1/2-1/3……+1/49-1/50 =1-1/50 =49/50 其中:=1/1-1/2+1/2-](/uploads/image/z/4554223-7-3.jpg?t=1%2F3%2B1%2F5%2B...1%2F99%3D%3Fchenkexin1006%E8%80%81%E5%B8%88%E6%82%A8%E5%A5%BD%21%E8%BF%99%E9%81%93%E9%A2%98%E7%9A%84%E5%8E%9F%E5%BC%8F%E6%98%AF%E8%BF%99%E6%A0%B7%E7%9A%84%3A1%2F3%2B1%2F5%2B1%2F7%2B1%2F9%2B1%2F11%2B...1%2F99%3D%3F%E6%88%91%E7%9C%8B%E4%BA%86%E6%82%A8%E7%BB%99%E5%87%BA%E7%9A%84%E7%AD%94%E6%A1%88%3A%E5%8E%9F%E5%BC%8F%3D1%2F%EF%BC%881%2B2%EF%BC%89%2B1%2F%EF%BC%882%2B3%EF%BC%89%E2%80%A6%E2%80%A61%2F%EF%BC%8849%2B50%EF%BC%89+%3D1%2F1-1%2F2%2B1%2F2-1%2F3%E2%80%A6%E2%80%A6%2B1%2F49-1%2F50+%3D1-1%2F50+%3D49%2F50+%E5%85%B6%E4%B8%AD%3A%3D1%2F1-1%2F2%2B1%2F2-)
1/3+1/5+...1/99=?chenkexin1006老师您好!这道题的原式是这样的:1/3+1/5+1/7+1/9+1/11+...1/99=?我看了您给出的答案:原式=1/(1+2)+1/(2+3)……1/(49+50) =1/1-1/2+1/2-1/3……+1/49-1/50 =1-1/50 =49/50 其中:=1/1-1/2+1/2-
1/3+1/5+...1/99=?
chenkexin1006老师您好!
这道题的原式是这样的:
1/3+1/5+1/7+1/9+1/11+...1/99=?
我看了您给出的答案:
原式=1/(1+2)+1/(2+3)……1/(49+50)
=1/1-1/2+1/2-1/3……+1/49-1/50
=1-1/50
=49/50
其中:=1/1-1/2+1/2-1/3……+1/49-1/50 到这一步看不清楚,能
按分步单元详细列出来吗?
1/3+1/5+...1/99=?chenkexin1006老师您好!这道题的原式是这样的:1/3+1/5+1/7+1/9+1/11+...1/99=?我看了您给出的答案:原式=1/(1+2)+1/(2+3)……1/(49+50) =1/1-1/2+1/2-1/3……+1/49-1/50 =1-1/50 =49/50 其中:=1/1-1/2+1/2-
数列问题,哪是小学能算的.等你高中再说吧,
原式=1/(1+2)+1/(2+3)……1/(49+50)
=1/1-1/2+1/2-1/3……+1/49-1/50
=1-1/50
=49/50
不知道
成立了“同盟会”提出了“驱除鞑虏,恢复中华,创立民国,平均地权”
你滴明白??