2+1.9-1.8+1.7-1.6+...+0.3-0.2+0.1
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/24 22:52:00
2+1.9-1.8+1.7-1.6+...+0.3-0.2+0.12+1.9-1.8+1.7-1.6+...+0.3-0.2+0.12+1.9-1.8+1.7-1.6+...+0.3-0.2+0.12
2+1.9-1.8+1.7-1.6+...+0.3-0.2+0.1
2+1.9-1.8+1.7-1.6+...+0.3-0.2+0.1
2+1.9-1.8+1.7-1.6+...+0.3-0.2+0.1
2+1.9-1.8+1.7-1.6+...+0.3-0.2+0.1
=2+(1.9-1.8)+(1.7-1.6)+...+(0.3-0.2)+0.1
=2+10x0.1
=3
=2.6
2+(1.9+0.1)-(1.8+0.2)+(1.7+03)-````````+(1.1+0.9)-1=2+2-1=3
算法这样:2+(1.9-1.8)+(1.7-1.6)+....(0。3-0.2)+0.1
=3