1+3-2+2+4-3+3+5-4+4+6-5+...+36+38-37=
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 13:14:22
![1+3-2+2+4-3+3+5-4+4+6-5+...+36+38-37=](/uploads/image/z/214029-45-9.jpg?t=1%2B3-2%2B2%2B4-3%2B3%2B5-4%2B4%2B6-5%2B...%2B36%2B38-37%3D)
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1+3-2+2+4-3+3+5-4+4+6-5+...+36+38-37=
1+3-2+2+4-3+3+5-4+4+6-5+...+36+38-37=
1+3-2+2+4-3+3+5-4+4+6-5+...+36+38-37=
=(1+3-2)+(2+4-3)+(3+5-4)+...(36+38-37)
=2+3+4+...37
=702