1/1*7+1/2*8+1/3*9~1/10*16

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/18 05:30:42
1/1*7+1/2*8+1/3*9~1/10*161/1*7+1/2*8+1/3*9~1/10*161/1*7+1/2*8+1/3*9~1/10*161/1*7+1/2*8+1/3*9~1/10*16

1/1*7+1/2*8+1/3*9~1/10*16
1/1*7+1/2*8+1/3*9~1/10*16

1/1*7+1/2*8+1/3*9~1/10*16
1/1*7+1/2*8+1/3*9~1/10*16
=1/6(1-1/7)+1/6(1/2-1/8)+1/6(1/3-1/9)+...+1/6(1/10-1/16)
=1/6(1-1/7+1/2-1/8+1/3-1/9+...+1/10-1/16)
=1+1/2+1/3+1/4+1/5+1/6-1/11-1/12-1/13-1/14-1/15-1/16
=