1/1*2+1/2*3+1/3*4+…+1/49*50=?

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/28 17:17:13
1/1*2+1/2*3+1/3*4+…+1/49*50=?1/1*2+1/2*3+1/3*4+…+1/49*50=?1/1*2+1/2*3+1/3*4+…+1/49*50=?1/1*2+1/2*3+1

1/1*2+1/2*3+1/3*4+…+1/49*50=?
1/1*2+1/2*3+1/3*4+…+1/49*50=?

1/1*2+1/2*3+1/3*4+…+1/49*50=?
1/1*2+1/2*3+1/3*4+…+1/49*50
=1-1/2+1/2-1/3+.+1/48-1/49+1/49-1/50
=1-1/50
=49/50

1/1*2+1/2*3+1/3*4+…+1/49*50
=1-1/2+1/2-1/3+1/3-1/4+.....+1/49-1/50
=1-1/50
=49/50